<PAGE>

================================================================================


               UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                               ________________

                                   FORM 10-Q

                               ________________

[X]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
                                  ACT OF 1934

                 For the quarterly period ended June 30, 2001

                       Commission File Number: 000-25291

                               _________________

                               TUT SYSTEMS, INC.
            (Exact name of registrant as specified in its charter)

<TABLE>
<S>                                                                <C>
              Delaware                                                           94-2958543
  (State or other jurisdiction of                                    (I.R.S Employer Identification No.)
   incorporation or organization)


5964 W. Las Positas Blvd., Pleasanton, California                                  94588
       (Address of principal executive offices)                                  (Zip Code)
</TABLE>

      Registrant's telephone number, including area code: (925) 490-3900

                                 ____________

Indicate by check mark whether the registrant: (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.

                              Yes [X]          No

As of June 30, 2001, 16,364,055 shares of the Registrant's Common Stock, par
value $0.001 per share, were issued and outstanding.

================================================================================

                                       1
<PAGE>

                               TUT SYSTEMS, INC.

                                   FORM 10-Q

                                     INDEX


<TABLE>
<S>                                                                                                                         <C>
PART I.     FINANCIAL INFORMATION

Item 1.     Condensed Consolidated Financial Statements (unaudited):

            Condensed Consolidated Balance Sheets as of June 30, 2001 and December 31, 2000..............................    3

            Condensed Consolidated Statements of Operations for the three months and six months ended
            June 30, 2001 and June 30, 2000..............................................................................    4

            Condensed Consolidated Statements of Cash Flows for the six months ended June 30,
            2001 and June 30, 2000.......................................................................................    5

            Notes to Unaudited Condensed Consolidated Financial Statements...............................................    6

Item 2.     Management's Discussion and Analysis of Financial Condition and Results of Operations........................   14

Item 3.     Quantitative and Qualitative Disclosures about Market Risk...................................................   33

PART II.    OTHER INFORMATION

Item 1.     Legal Proceedings............................................................................................   34

Item 2.     Changes in Securities and Use of Proceeds....................................................................   34

Item 3.     Defaults Upon Senior Securities..............................................................................   34

Item 4.     Submission of Matters to a Vote of Security Holders..........................................................   34

Item 5.     Other Information............................................................................................   34

Item 6.     Exhibits and Reports on Form 8-K.............................................................................   34
</TABLE>

                                       2
<PAGE>

                        PART I.   FINANCIAL INFORMATION

ITEM 1.   CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

                               TUT SYSTEMS, INC.

                     CONDENSED CONSOLIDATED BALANCE SHEETS
                   (in thousands, except per share amounts)
                                  (unaudited)

<TABLE>
<CAPTION>
                                                                                        June 30,     December 31,
                                                                                          2001           2000
                                                                                        ----------   ------------
<S>                                                                                     <C>          <C>
                                    ASSETS
Current assets:
 Cash and cash equivalents..........................................................     $  41,635       $  47,307
 Short-term investments.............................................................        20,223          55,307
 Accounts receivable, net of allowance for doubtful accounts of $13,447 and
  $21,167 in 2001 and 2000, respectively............................................         1,670           6,124
 Inventories, net...................................................................        22,915          36,285
 Prepaid expenses and other.........................................................         3,221           3,526
                                                                                         ---------       ---------
    Total current assets............................................................        89,664         148,549
Property and equipment, net.........................................................         9,764          10,578
Intangibles and other assets (including restricted cash of $1,850 and
 $3,248 in 2001 and 2000, respectively).............................................        39,866          46,461
                                                                                         ---------       ---------

    Total assets....................................................................     $ 139,294       $ 205,588
                                                                                         =========       =========

                     LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
 Accounts payable...................................................................     $   2,301       $   9,446
 Accrued liabilities................................................................        12,681          27,129
 Deferred revenue...................................................................           906           1,054
                                                                                         ---------       ---------
    Total current liabilities.......................................................        15,888          37,629
Deferred revenue, net of current portion............................................           951           1,454
Other liabilities...................................................................           343             332
                                                                                         ---------       ---------
    Total liabilities...............................................................        17,182          39,415
                                                                                         ---------       ---------

Commitments and contingencies (Note 7)

Stockholders' equity:
 Common stock, $0.001 par value, 100,000 shares authorized, 16,364 and
  15,911 shares issued and outstanding in 2001 and 2000, respectively...............            16              16
 Additional paid-in capital.........................................................       301,330         298,332
 Deferred compensation..............................................................          (312)         (1,041)
 Notes receivable from stockholders.................................................          (315)           (555)
 Accumulated other comprehensive income (loss)......................................           (54)              6
 Accumulated deficit................................................................      (178,553)       (130,585)
                                                                                         ---------       ---------
    Total stockholders' equity......................................................       122,112         166,173
                                                                                         ---------       ---------

    Total liabilities and stockholders' equity......................................     $ 139,294       $ 205,588
                                                                                         =========       =========
</TABLE>

  The accompanying notes are an integral part of these condensed consolidated
                             financial statements.

                                       3
<PAGE>

                               TUT SYSTEMS, INC.

                CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                   (in thousands, except per share amounts)
                                  (unaudited)

<TABLE>
<CAPTION>
                                                                                   Three Months Ended      Six Months Ended
                                                                                        June 30,               June 30,
                                                                                  ---------------------  --------------------
                                                                                     2001        2000      2001       2000
                                                                                  ---------    -------   --------   --------
<S>                                                                               <C>         <C>        <C>        <C>
Revenues:
 Product......................................................................     $  2,494    $20,345   $  7,144    $36,509
 License and royalty..........................................................          228        669        465        979
                                                                                   --------    -------   --------    -------
    Total revenues............................................................        2,722     21,014      7,609     37,488
                                                                                   --------    -------   --------    -------

Cost of goods sold:
 Product......................................................................        2,543     11,234     24,290     20,371
                                                                                   --------    -------   --------    -------
    Total cost of goods sold..................................................        2,543     11,234     24,290     20,371
                                                                                   --------    -------   --------    -------

Gross (loss) margin...........................................................          179      9,780    (16,681)    17,117
                                                                                   --------    -------   --------    -------

Operating expenses:
 Sales and marketing..........................................................        3,501      4,785      7,326      9,604
 Research and development.....................................................        4,092      4,048      8,774      7,231
 General and administrative...................................................        2,918      2,541      6,154      4,716
 Restructuring costs..........................................................        2,092         --      2,092         --
 In-process research and development..........................................           --         --      1,160        800
 Amortization of intangibles and abandonment of completed technology and
  patents.....................................................................        2,561      1,814      7,905      2,560
 Noncash compensation expense.................................................           61        114        122        228
                                                                                   --------    -------   --------    -------
    Total operating expenses..................................................       15,225     13,302     33,533     25,139
                                                                                   --------    -------   --------    -------

Loss from operations..........................................................      (15,046)    (3,522)   (50,214)    (8,022)
Interest expense..............................................................           (4)      (139)       (13)      (449)
Interest income...............................................................          957      2,481      2,156      3,056
Other income, net.............................................................           94         --        103         --
                                                                                   --------    -------   --------    -------

Loss before income taxes......................................................      (13,999)    (1,180)   (47,968)    (5,415)
Income tax expense............................................................           --         --         --          1
                                                                                   --------    -------   --------    -------

Net loss......................................................................     $(13,999)   $(1,180)  $(47,968)   $(5,416)
                                                                                   ========    =======   ========    =======

Net loss per share, basic and diluted (Note 3)................................     $  (0.86)   $ (0.08)  $  (2.95)   $ (0.39)
                                                                                   ========    =======  =========   ========
Shares used in computing net loss per share, basic and diluted (Note 3).......       16,316     15,302     16,261     13,869
                                                                                   ========    =======   ========    =======
</TABLE>

  The accompanying notes are an integral part of these condensed consolidated
                             financial statements.

                                       4
<PAGE>

                               TUT SYSTEMS, INC.

                CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (in thousands)
                                  (unaudited)

<TABLE>
<CAPTION>
                                                                                           Six Months Ended
                                                                                               June 30,
                                                                                      ---------------------------
                                                                                          2001            2000
                                                                                      -----------      ----------
<S>                                                                                   <C>              <C>
Cash flows from operating activities:
 Net loss...........................................................................     $(47,968)     $  (5,416)
 Adjustments to reconcile net loss to net cash used in operating activities:
  Depreciation......................................................................        1,747            791
  Noncash interest income and amortization of discounts on investments..............          (58)        (1,572)
  Provision for allowance for doubtful accounts.....................................          686            202
  Provision for excess and obsolete inventory.......................................       21,877          1,090
  Amortization of intangible assets, abandonment of completed technology and
    patents and noncash compensation expense........................................        8,749          3,426
  Write-off of in-process research and development..................................        1,160            800
  Gain (loss) on sale or disposal of other assets...................................           62           (103)
  Change in operating assets and liabilities:
    Accounts receivable.............................................................        3,768         (4,532)
    Inventories.....................................................................       (8,507)        (7,841)
    Prepaid expenses and other assets...............................................        2,683           (733)
    Accounts payable and accrued liabilities........................................      (23,459)           601
    Deferred revenue................................................................         (651)          (325)
                                                                                         --------      ---------
     Net cash used in operating activities..........................................      (39,911)       (13,612)
                                                                                         --------      ---------
Cash flows from investing activities:
 Purchase of property and equipment.................................................         (930)        (4,170)
 Purchases of short-term investments................................................       (7,002)      (122,400)
 Purchases of other assets..........................................................           --         (4,501)
 Proceeds from maturities of short-term investments.................................       42,133         18,831
 Proceeds from sale of other assets.................................................           --            128
 Acquisition of businesses, net of cash acquired and purchased research and
  development.......................................................................         (169)        (1,788)
                                                                                         --------      ---------
     Net cash provided by (used in) investing activities............................       34,032       (113,900)
                                                                                         --------      ---------
Cash flows from financing activities:
 Payment on lines of credit.........................................................           --         (1,529)
 Proceeds from issuances of common stock, net.......................................          207        142,544
   Other............................................................................           --             26
                                                                                         --------      ---------
     Net cash provided by financing activities......................................          207        141,041
                                                                                         --------      ---------
Net increase (decrease) in cash and cash equivalents................................       (5,672)        13,529
Cash and cash equivalents, beginning of period......................................       47,307         13,405
                                                                                         --------      ---------
Cash and cash equivalents, end of period............................................     $ 41,635      $  26,934
                                                                                         ========      =========
Noncash financing activities:
 Common stock issued in connection with ActiveTelco acquisition in 2001 and
  FreeGate and Xstreamis acquisitions in 2000, respectively.........................     $  2,944      $  41,118
                                                                                         ========      =========
 Unearned compensation related to stock and stock option grants.....................     $   (153)     $   2,427
                                                                                         ========      =========
</TABLE>

  The accompanying notes are an integral part of these condensed consolidated
                             financial statements.

                                       5
<PAGE>

                               TUT SYSTEMS, INC.

         NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                    (in thousands, except per share amounts)

NOTE 1 -- DESCRIPTION OF BUSINESS:

  Tut Systems, Inc. (the "Company") was founded in 1983 and began operations in
August 1991. The Company designs, develops and markets advanced communications
products that enable high-speed data access over the copper infrastructure of
telephone companies, as well as the copper telephone wires in residential and
commercial multi-tenant buildings. The Company's products incorporate high-
bandwidth access multiplexers, associated modems and routers, ethernet extension
products and integrated network management software.

NOTE 2 -- BASIS OF PRESENTATION:

  The accompanying condensed consolidated financial statements as of June 30,
2001 and December 31, 2000 and for the three months and six months ended June
30, 2001 and 2000 are unaudited. The unaudited interim condensed consolidated
financial statements have been prepared on the same basis as the annual
financial statements and, in the opinion of management, reflect all adjustments,
which include only normal recurring adjustments, necessary to present fairly the
Company's financial position as of June 30, 2001 and December 31, 2000, its
results of operations for the three and six months ended June 30, 2001 and 2000
and its cash flows for the six months ended June 30, 2001 and 2000. These
condensed consolidated financial statements and the accompanying notes are
unaudited and should be read in conjunction with the Company's audited financial
statements included in the Company's Annual Report on Form 10-K, filed with the
Securities and Exchange Commission on April 2, 2001. The balance sheet as of
December 31, 2000 was derived from audited financial statements, but does not
include all disclosures required by generally accepted accounting principles.
The results for the three months and six months ended June 30, 2001 are not
necessarily indicative of the expected results for any other interim period or
the year ending December 31, 2001.

NOTE 3 -- SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:

Net loss per share

  Basic and diluted net loss per share are computed using the weighted average
number of common shares outstanding. Stock options and restricted common stock
subject to repurchase were not included in the computation of diluted net loss
per share because the effect would be antidilutive.

  The calculation of net loss per share follows:

<TABLE>
<CAPTION>
                                                                             Three Months Ended          Six Months Ended
                                                                                  June 30,                   June 30,
                                                                              2001          2000          2001         2000
                                                                            --------       -------      --------      -------
<S>                                                                         <C>            <C>          <C>           <C>
  Net loss per share, basic and diluted:
  Net loss ................................................................ $(13,999)      $(1,180)     $(47,968)     $(5,416)
                                                                            ========       =======      ========      =======
  Net loss per share, basic and diluted ................................... $  (0.86)      $ (0.08)     $  (2.95)     $ (0.39)
                                                                            ========       =======      ========      =======
  Shares used in computing net loss per share, basic and diluted ..........   16,316        15,302        16,261       13,869
                                                                            ========       =======      ========      =======
  Antidilutive securities not included in net loss per share calculations..    1,693         2,853         1,693        2,853
                                                                            ========       =======      ========      =======
</TABLE>

                                       6
<PAGE>

                               TUT SYSTEMS, INC.

  NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
                    (in thousands, except per share amounts)

Concentrations

  The Company operates in one business segment, designing, developing and
marketing advanced communications products that enable high-speed data access in
residential and commercial multi-tenant buildings. The market for high-speed
data access products is characterized by rapid technological developments,
frequent new product introductions, changes in end-user requirements and
constantly evolving industry standards. The Company's future success depends on
its ability to develop, introduce and market enhancements to its existing
products, to introduce new products in a timely manner that meet customer
requirements and to respond effectively to competitive pressures and
technological advances. Further, the emergence of new industry standards,
whether formally adopted by official standards committees or informally through
widespread use of such standards by telephone companies or other service
providers, could require the Company to redesign its products.

  Currently, the Company relies on contract manufacturers and certain single
source suppliers of materials for certain product components. As a result,
should the Company's current manufacturers or suppliers not produce and deliver
inventory for the Company to sell on a timely basis, operating results could be
adversely impacted.

  From time to time, the Company maintains a substantial portion of its cash and
cash equivalents in money market accounts with one financial institution. The
Company invests its excess cash in debt instruments of the U.S. Treasury,
governmental agencies and corporations with strong credit ratings. The Company
has established guidelines relating to diversification and maturities in order
to maintain the safety and liquidity of these assets. To date, the Company has
not experienced any significant losses on its cash equivalents or short-term
investments. However, at June 30, 2001, the Company held an investment in
commercial paper issued by Southern California Edison Company. This investment
is included in short-term investments at a carrying value of approximately $9.0
million which matured in January 2001 and is currently in default. The Company
believes that the fair value of this investment has declined since the balance
sheet date. However, at this time, the Company cannot practicably determine the
ultimate amount of the decline and the net realizable value of this investment.

Recent accounting pronouncements

  In June 1998, the Financial Accounting Standards Board ("FASB") issued SFAS
No. 133, "Accounting for Derivative Instruments and Hedging Activities," which
establishes accounting and reporting standards for derivative instruments and
hedging activities. It requires an entity to recognize all derivatives as either
assets or liabilities in the balance sheet and measure those instruments at fair
value. The Company adopted SFAS No. 133 (as amended by SFAS No. 138) as required
by SFAS No. 137, "Deferral of the Effective Date of the FASB Statement No. 133,"
effective January 1, 2001. To date, the Company has not engaged in derivative
and hedging activities. Accordingly the adoption of SFAS No. 133 did not have a
material impact on the financial statements.

                                       7
<PAGE>

                               TUT SYSTEMS, INC.

  NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
                    (in thousands, except per share amounts)

  In June 2001, the EITF issued EITF Issue No. 00-25, "Vendor Income Statement
Characterization of Consideration Paid to a Reseller of the Vendor's Products."
EITF Issue No. 00-25 addresses whether consideration from a vendor to a reseller
is (a) an adjustment of the selling prices of the vendor's products and,
therefore, should be deducted from revenue when recognized in the vendor's
income statement or (b) a cost incurred by the vendor for assets or services
received from the reseller and, therefore, should be included as a cost or
expense when recognized in the vendor's income statement. The Company will adopt
EITF Issue No. 00-25 effective January 1, 2002. The adoption of EITF Issue
No. 00-25 is not expected to have a material impact on the Company's financial
statements.

  In July 2001, the Financial Accounting Standards Board ("FASB") issued SFAS
No. 142, Goodwill and Other Intangible Assets, which addresses financial
accounting and reporting for acquired goodwill and other intangible assets and
supersedes APB Opinion No. 17, Intangible Assets. It addresses how intangible
assets that are acquired individually or with a group of other assets (but not
those acquired in a business combination) should be accounted for in financial
statements upon their acquisition. This Statement also addresses how goodwill
and other intangible assets should be accounted for after they have been
initially recognized in the financial statements. The Company will adopt SFAS
No. 142 effective January 1, 2002. The Company is currently evaluating the
impact of SFAS No. 142.

Reclassifications

  Certain reclassifications have been made to prior period balances in order to
conform to the current period presentation.

NOTE 4 -- COMPREHENSIVE LOSS:

  Accumulated other comprehensive loss includes unrealized gains and losses on
other assets and foreign currency translation adjustment that have been
previously excluded from net loss and reflected instead in stockholders' equity.
The following table sets forth the calculation of comprehensive loss:

<TABLE>
<CAPTION>
                                                           Three Months Ended          Six Months Ended
                                                                June 30,                   June 30,
                                                       --------------------------  -------------------------
                                                              2001          2000          2001         2000
                                                          --------       -------      --------      -------
  <S>                                                     <C>            <C>          <C>           <C>
  Net loss...........................................     $(13,999)      $(1,180)     $(47,968)     $(5,416)
                                                          --------       -------      --------      -------
  Unrealized gains (losses) on other assets..........           (4)         (149)          (45)         366
  Foreign currency translation adjustment............            9            --           (15)          --
                                                          --------       -------      --------      -------
  Net change in other comprehensive loss.............            5          (149)          (60)         366
                                                          --------       -------      --------      -------
  Total comprehensive loss...........................     $(13,994)      $(1,329)     $(48,028)     $(5,050)
                                                          ========       =======      ========      =======
</TABLE>

                                       8
<PAGE>

                               TUT SYSTEMS, INC.

  NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
                    (in thousands, except per share amounts)

NOTE 5 -- BUSINESS COMBINATIONS:

ActiveTelco

  On January 11, 2001, the Company acquired ActiveTelco, Inc. ("ActiveTelco")
for approximately $4,850, consisting of an aggregate of 321 shares of the
Company's common stock and 19 options to purchase shares of the Company's common
stock, acquisition related expenses consisting primarily of legal, other
professional fees, assumed ActiveTelco convertible notes in the amount of $650
plus accrued interest and other assumed liabilities of approximately $1,100.
This transaction was treated as a purchase for accounting purposes. ActiveTelco
provided an Internet telephony platform that enabled Internet and
telecommunications service providers to integrate and deliver Web-based
telephony applications such as unified messaging, long-distance service,
voicemail and fax delivery, call forwarding, call conferencing and callback
services.

  The allocation of the purchase price was based on the estimated fair value of
goodwill of $3,248, assembled workforce of $442, and in-process research and
development of $1,160. The amount allocated to intangibles was determined based
on an appraisal using established valuation techniques. The purchased in-process
technology was expensed upon acquisition, because technological feasibility had
not been established and no future alternative uses existed. The in-process
technology percentage of completion was estimated to be 75%. The value of this
in-process technology was determined by estimating the costs to develop the
purchased in-process technology into a commercially viable product, estimating
the resulting net cash flows from the sale of the product resulting from the
completion of the in-process technology and discounting the net cash flows back
to their present value. Research and development costs to bring in-process
technology from ActiveTelco to technological feasibility are not expected to
have a material impact on the Company's future results of operations or cash
flows.

                                       9
<PAGE>

                               TUT SYSTEMS, INC.

  NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
                    (in thousands, except per share amounts)

NOTE 6 -- BALANCE SHEET COMPONENTS:

<TABLE>
<CAPTION>
                                                                  June 30,     December 31,
                                                                   2001            2000
                                                                ---------      ------------
<S>                                                             <C>            <C>
  Short-term investments:
     Commercial paper......................................      $  9,000        $ 37,564
     Corporate bonds.......................................         3,077          12,637
     US government agency notes............................         8,146           5,106
                                                                 --------        --------
                                                                 $ 20,223        $ 55,307
                                                                 ========        ========
  Inventories, net:
     Finished goods........................................      $ 54,361        $ 43,151
     Raw materials.........................................         3,470           6,889
                                                                 --------        --------
                                                                   57,831          50,040
     Less: reserves........................................       (34,916)        (13,755)
                                                                 --------        --------
                                                                 $ 22,915        $ 36,285
                                                                 ========        ========
  Intangibles and other assets:
     Goodwill..............................................      $ 37,578        $ 34,298
     Completed technology and patents*.....................         7,180          10,580
     Assembled workforce...................................         3,742           3,300
                                                                 --------        --------
                                                                   48,500          48,178
     Less: accumulated amortization*.......................       (12,130)         (7,648)
                                                                 --------        --------
     Net intangibles.......................................        36,370          40,530
     Other**...............................................         3,496           5,931
                                                                 --------        --------
                                                                 $ 39,866        $ 46,461
                                                                 ========        ========
  Accrued liabilities:
     Provision for loss on purchase commitments............      $  5,901        $ 19,042
     Compensation..........................................         1,692           2,571
     Other.................................................         5,088           5,516
                                                                 --------        --------
                                                                 $ 12,681        $ 27,129
                                                                 ========        ========
</TABLE>

_________________________
*    The Company wrote off $2,692, net in completed technology and patents in
     the first quarter of 2001.
**   Included in other assets is restricted cash of $1,850 as of June 30, 2001,
     see Note 7, and $3,248 as of December 31, 2000.

NOTE 7 -- COMMITMENTS AND CONTINGENCIES:

Lease obligations

  The Company leases office, manufacturing and warehouse space under
noncancelable operating leases that expire in 2007. In connection with business
combinations in 1999 and 2000, the Company assumed operating leases that expire
in December 2001 and August 2002.

  The lease for the Pleasanton facility expires April 2007, with an option to
renew for five years. Under the terms of the lease agreement, the Company was
required to issue a letter of credit in the amount of $1,850. The letter of
credit is collateralized by restricted funds in the amount of $1,850, which are
included in intangibles and other assets. The letter of credit is reduced
annually, beginning July 1, 2001, by $250, provided that the Company is not in
default under the terms of the lease agreement.

                                      10
<PAGE>

                               TUT SYSTEMS, INC.

  NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
                    (in thousands, except per share amounts)

Purchase commitments

     At June 30, 2001, the Company had noncancellable commitments to purchase
finished goods inventory totaling $3,710 in aggregate.

Contingencies

     The Company is subject to legal proceedings, claims and litigation arising
in the ordinary course of business. The Company's management does not expect
that the ultimate costs to resolve these matters will have a material adverse
effect on the Company's consolidated financial position, results of operations,
or cash flows. See Note 11 regarding the class action lawsuits filed against the
Company in July 2001.

NOTE 8 -- SEGMENT INFORMATION:

     The Company currently targets its sales and marketing efforts to both
public and private service providers and users across two related markets. The
Company currently operates in a single business segment as there is only one
measurement of profitability for its operations. Revenues are attributed to the
following countries based on the location of customers:

<TABLE>
<CAPTION>
                                               Three Months Ended       Six Months Ended
                                                    June 30,                June 30,
                                                    -------                 -------
                                                 2001       2000         2001        2000
                                                 ----       ----         ----        ----
     <S>                                       <C>       <C>           <C>        <C>
     United States.........................    $1,409    $10,624       $3,327     $17,327
     International:
       Denmark.............................        --          *          524           *
       Hong Kong...........................         *      1,309            *       4,486
       Japan...............................     1,066          *        3,079           *
       Korea...............................        --      6,331           --      12,293
       All other countries.................       247      2,750          679       3,382
                                               ------    -------       ------     -------
                                               $2,722    $21,014       $7,609     $37,488
                                               ======    =======       ======     =======
</TABLE>

----------------------
*    Revenue attributable to this country was less than 10% of total revenue and
     any revenue attributable to this country is included in the "All other
     countries" line.

     It is impracticable for the Company to compute product revenues by product
type for the three and six months ended June 30, 2001 and 2000.

     Two customers, RIKEI Corporation and Tsunagu Network Communications, Inc.,
accounted for 22% and 10%, respectively, of the Company's revenue for the three
months ended June 30, 2001 and two customers, Kanematsu Computer System Ltd. and
RIKEI Corporation, accounted for 17% and 17%, respectively, of the Company's
revenue for the six months ended June 30, 2001. Two customers, TriGem InfoComm,
Corp. and Darwin Networks, accounted for 30% and 18%, respectively, of the
Company's revenue for the three months ended June 30, 2000 and three customers,
TriGem InfoComm, Corp., Darwin Networks and I-Quest Corporation, accounted for
33%, 14% and 10%, respectively, of the Company's revenue for the six months
ended June 30, 2000.

                                       11
<PAGE>

                               TUT SYSTEMS, INC.

  NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
                    (in thousands, except per share amounts)

NOTE 9 -- RESTRUCTURING COSTS:

     On April 23, 2001, the Company announced a restructuring program which
included a workforce reduction, closure of excess facilities, and disposal of
certain of its fixed assets. As a result of this restructuring program, the
Company recorded restructuring costs of $2,092. The following information
relates to restructuring costs which were recorded during the three months ended
June 30, 2001.

Workforce reduction

     The restructuring program resulted in the reduction of approximately 28% of
the Company's employees and the Company recorded a workforce reduction charge of
approximately $1,235 relating primarily to severance and fringe benefits. In
addition, the number of temporary and contract workers employed by the Company
was significantly reduced.

Closure of excess facilities and disposal of fixed assets

     The Company recorded costs of restructuring of $785 relating to closure of
excess facilities. The closure of excess facilities included the closure of
certain satellite facilities due to workforce reductions and the Company's
effort to reduce operating expenses as a result of the restructuring. This cost
of restructuring is primarily comprised of non-cancelable lease and operating
costs. Other fixed assets retired as a result of the workforce reductions
totaled $72.

     Cash expenditures relating to workforce reductions were paid in the three
months ended June 30, 2001. Amounts related to the closure of excess facilities
were accrued at June 30, 2001 and will be paid over the respective lease terms
through August 2002.

NOTE 10 -- TENDER OFFER:

     On May 14, 2001, the Company made an offer to exchange all stock options
outstanding under the Company's 1992 Stock Plan, 1998 Stock Plan and the 1999
Nonstatutory Stock Option Plan to purchase approximately 1,456 shares of the
Company's Common Stock, par value $0.001 per share, held by eligible employees
for new stock options that will be granted under the Company's 1998 Stock Plan
or the 1999 Nonstatutory Stock Option Plan, upon the terms and subject to the
conditions set forth in the Offer to Exchange. An "eligible employee" refers to
all employees of Tut Systems, Inc. and its U.S. subsidiaries who are employees
at the time the new stock options are granted, except all executive officers,
vice-presidents, members of the Board of Directors and employees receiving
Workers' Adjustment and Retraining Notification Act pay are not eligible to
participate in the offer. The number of shares of Common Stock subject to the
new stock options will be equal to the number of shares of Common Stock subject
to the unexercised stock options tendered by such eligible employees and
accepted for exchange and cancelled. The new stock options will be reissued at a
date at least six months and two days later than the date of cancellation. This
stock option exchange program required the filing of a tender offer statement.
Employees receiving such an offer were requested to read the Company's Form 10-Q
for the quarter ended March 31, 2001, a related offering memorandum and other
pertinent information, before making any decision with respect to the offer.
Accounting and other regulatory concerns prevent or limit the Company's ability
to issue additional stock options to these employees during the period between
cancellation and reissuance.

     This offer expired on June 8, 2001. Pursuant to the offer, the Company
accepted, for cancellation, stock options to purchase approximately 1,056 shares
of Tut System, Inc. Common Stock. Subject to the terms and conditions of the
offer, the Company will grant new stock options to purchase approximately 1,056
shares of Tut Systems, Inc. Common Stock on December 13, 2001 in exchange for
the stock options surrendered in the offer.

                                       12
<PAGE>

                               TUT SYSTEMS, INC.

  NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS--(Continued)
                    (in thousands, except per share amounts)

NOTE 11 -- SUBSEQUENT EVENT:

      Beginning July 12, 2001, class action lawsuits were filed against the
Company and certain of its officers in the United States District Court,
Northern District of California. The complaints are similar and purport to bring
suit on behalf of those who purchased the Company's publicly traded securities
between July 20, 2000 and January 31, 2001. The plaintiffs allege that the
defendants made false and misleading statements in violation of Sections 10(b)
and 20(a) of the Securities Exchange Act of 1934 and seek unspecified
compensatory damages and other relief. The Company believes the claims are
without merit and intends to defend the actions vigorously. There can be no
assurance that any of the complaints discussed above will be resolved without
costly litigation, or in a manner that is not materially adverse to our
financial position, results of operations or cash flows. No estimate can be made
of the possible loss or possible range of loss associated with the resolution of
these contingencies.

                                       13
<PAGE>

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
                                 OF OPERATIONS

     The following discussion of our financial condition and results of
operations should be read in conjunction with the Condensed Consolidated
Financial Statements and the related Notes included elsewhere in this Quarterly
Report on Form 10-Q. This discussion contains, in addition to historical
information, forward-looking statements that involve risks and uncertainties
including but not limited to statements regarding customer and geographic mix,
gross margins and operating costs and expenses. Our actual results could differ
materially from the results discussed in the forward-looking statements. Factors
that could cause or contribute to such differences include, but are not limited
to, those discussed below, as well as those discussed in our Annual Report on
Form 10-K, as filed with the SEC on April 2, 2001, those discussed in our other
reports and filings with the SEC and those discussed under "Risk Factors"
elsewhere in this Quarterly Report on Form 10-Q. We disclaim any obligation to
update information contained in any forward-looking statement.

Overview

     We design, develop and market multi-service broadband access systems that
enable service providers to deliver high-speed data access to multi-tenant
buildings. We use our proprietary FastCopper technology to deliver cost-
effective, scalable and easy to deploy solutions that exploit the underutilized
bandwidth of copper telephone wires within these buildings. Our collection of
FastCopper technologies include HomeRun, which was selected as the initial
specification for a home networking standard promoted by the HomePNA, and
LongRun, a proprietary extension of HomeRun providing superior performance at
longer distances. These technologies are deployed through our Expresso high-
bandwidth access multiplexers and associated routers. In addition to our
Expresso access multiplexers are our products that provide service providers
with enhanced capabilities such as subscriber management, bandwidth management,
IP address management, and network address translation. Recently, we introduced
our IntelliPOP product line with our proprietary Signature Switch technology.
Our proprietary Signature Switch technology is designed to allow service
providers to manage and guarantee bandwidth and service performance across
applications such as IP telephony, VPN networking, videoconferencing, video-on-
demand, file transfer and Internet access, and to efficiently configure
IntelliPOP for the delivery of these services according to the unique market
requirements of multi-tenant building owners and end-user subscribers on an
individual or collective basis.

     We commenced operations in August 1991. Through the third quarter of 1998,
substantially all of our revenue was derived from the sale of our XL Ethernet
LAN extension products to the corporate and university segments of the MCU
market. In early 1997, we introduced the first products in our Expresso product
line aimed at service provider markets. During the first quarter of 1998, we
began licensing our HomeRun technology to certain leading semiconductor,
computer hardware and consumer electronics manufacturers for incorporation into
integrated circuits and consumer products including PCs, peripherals, modems and
other Internet appliances. In the third and fourth quarters of 1998, we
commenced selling our Expresso GS products, which are configured for local loop
applications, and Expresso MDU products, which incorporate our HomeRun
technology to a broader range of service providers, primarily those serving
apartment complexes, hotels, university dormitories and military complexes in
the MDU market. In the first quarter of 1999, we commenced selling Expresso MDU
products incorporating our LongRun technology and Expresso MDU Lite into
additional segments of the MDU market. During the fourth quarter of 1999, we
commenced selling our Expresso SMS 2000 and companion Expresso OCS system
providing subscriber management, bandwidth management, credit card billing and
other functions to the MDU market. In the first half of 2001, we commenced
selling our new IntelliPOP product.


     We generate revenue primarily from the sale of hardware products and, to a
lesser extent, through the licensing of our HomeRun technology and the sale of
our software products. We generally recognize product revenue when persuasive
evidence of an arrangement exists, delivery has occurred, the fee is fixed or
determinable, and collectibility is probable. Revenue from service obligations
included in product revenues is deferred and generally recognized ratably over
the period of the obligation. We also maintain accruals and allowances for all
cooperative marketing and other programs. Estimated sales returns and warranty
costs are based on historical experience and are recorded at the time revenue is
recognized. Our products generally carry a one year warranty from the date of
purchase.

                                       14
<PAGE>

     License and royalty revenue consists of nonrefundable up-front license
fees, some of which may offset initial royalty payments, and royalties.
Currently, the majority of our license and royalty revenue is comprised of non-
refundable license fees paid in advance. Such revenue is recognized ratably over
the period during which post-contract customer support is expected to be
provided or upon delivery and transfer of agreed upon technical specifications
in contracts where essentially no further support obligations exist. Future
license and royalty revenue is expected to consist primarily of royalties based
on products sold by our licensees. We do not expect that such license and
royalty revenue will constitute a substantial portion of our revenue in future
periods. With the introduction of our IntelliPOP product line, we expect that
revenue from the sale of software products and maintenance fees may constitute a
substantial portion of revenue in future periods.

     We may incur sales price reductions on some of our products to remain
competitive and to reduce our relatively high levels of inventory. Although we
have historically been able to offset most price declines with reductions in our
manufacturing costs, there can be no assurance that we will be able to offset
further price declines with cost reductions. Also, recent market developments,
including the writedown of significant amounts of inventory by competitors and
products resold as a result of bankruptcies within the industry, may put
increased pressure on the sales price of our existing inventories. In addition,
some of our licensees may sell products based on our technology to our
competitors or potential competitors. There can be no assurance that our HomeRun
technology will be successfully deployed on a widespread basis or that such
licensing will not result in an erosion of the potential market for our
products.

     Sales to customers outside of the United States accounted for approximately
56.3% and 53.8% of revenue for the six months ended June 30, 2001 and 2000,
respectively. On average, we expect international sales to represent
approximately 50% or more of our revenue in future periods. However, actual
results, both geographically and in absolute dollars, may vary from quarter to
quarter depending on the timing of orders placed by customers. To date, all
international sales have been denominated in U.S. dollars.

     We expect to continue to evaluate product line expansion and new product
opportunities, engage in research, development and engineering activities and
focus on cost-effective design of our products. Accordingly, we will continue to
make significant expenditures on research and development activities as a
percentage of overall operating expenses.

     In February 2000, we acquired FreeGate Corporation ("FreeGate") for
approximately $25.5 million, consisting of 510,931 shares of our common stock,
19,707 options to acquire shares of our common stock, and acquisition related
expenses consisting primarily of investment advisory, legal, other professional
fees and other assumed liabilities. This transaction was treated as a purchase
for accounting purposes. FreeGate was located in Sunnyvale, California. FreeGate
designed, developed and marketed Internet server appliances combining the
functions of IP routing, firewall security, network address translation, secure
remote access via VPN networking, and email and web servers on a compact, PC-
based platform.

     In April 2000, we acquired certain assets of OneWorld Systems, Inc.
("OneWorld") for approximately $2.4 million in cash. This transaction was
treated as a purchase of assets for accounting purposes.

     In May 2000, we acquired Xstreamis Limited ("Xstreamis"), formerly
Xstreamis, plc, for $19.6 million, consisting of 439,137 shares of our common
stock, 10,863 options to acquire shares of our common stock, $0.1 million in
cash and $0.6 million in acquisition related expenses consisting primarily of
legal and other professional fees. This transaction was treated as a purchase
for accounting purposes. Xstreamis was located in the United Kingdom. Xstreamis
provided policy-driven traffic management for high-performance, multimedia
networking solutions including routing, switching and bridging functions.

     In January 2001, we acquired ActiveTelco, Inc. ("ActiveTelco") for
approximately $4.9 million, consisting of an aggregate of 321,343 shares of our
common stock and 18,657 options to purchase shares of our common stock and
acquisition related expenses consisting primarily of legal, other professional
fees, assumed ActiveTelco convertible notes in the amount of $0.7 million plus
accrued interest and other assumed liabilities of approximately $1.1 million.
This transaction was treated as a purchase for accounting purposes. ActiveTelco
was located in Fremont, California. ActiveTelco provided an Internet telephony
platform that enabled Internet and telecommunications service providers to
integrate and deliver Web-based telephony applications such as unified

                                       15
<PAGE>

messaging, long-distance service, voicemail and fax delivery, call forwarding,
call conferencing and callback services.

     While we expect to derive benefits from sales of product lines that are
designed, developed and marketed as a result of these acquisitions, there can be
no assurance that we will be able to complete the development and commercial
deployment of certain of these products. In January 2001, we decided to abandon
future sales of the existing OneGate product that we acquired in the FreeGate
acquisition. In April 2001, as part of our cost reduction efforts, we decided
not to pursue further incorporation of the related OneGate and other
intellectual property acquired from FreeGate into the design of future products.
As a result, we took a writedown for abandonment of the related completed
technology and patents of $2.7 million in the first quarter of 2001.

     These completed transactions added significant costs associated with
personnel, including rent for additional facilities and related general and
administrative costs, as well as costs associated with research and development,
and sales and marketing activities which substantially increased our operating
costs in fiscal year 2000 when compared to related costs expended in fiscal year
1999.

     In January 2001 and April 2001, we reduced our total workforce by 10% and
28%, respectively, in an effort to control overall operating expenses in
response to recent declines in and expected slowing of our sales growth. In
April 2001, we also implemented plans to close several of our satellite offices.
We incurred restructuring charges of $2.1 million related to the April 2001
restructuring plan.

     We have incurred net operating losses to date and, as of June 30, 2001, had
an accumulated deficit of $178.6 million. Our ability to generate income from
operations will be primarily dependent on increases in sales volume, reductions
in manufacturing costs and the growth of high-speed data access solutions in the
service provider and MTU markets. In view of our limited history of product
revenue from new markets, our reliance on growth in deployment of high-speed
data access solutions and the unpredictability of orders and subsequent revenue,
we believe that period-to-period comparisons of our financial results are not
necessarily meaningful and should not be relied upon as an indication of future
performance. Failure to generate significant revenue from new products, whether
due to lack of market acceptance, competition, technological change or
otherwise, or the inability to reduce manufacturing costs, will harm our
business, financial condition and results of operations.

                                       16
<PAGE>

Results of Operations

     The following table sets forth items from our statements of operations as a
percentage of total revenue for the periods indicated:

<TABLE>
<CAPTION>
                                                                             Three Months Ended            Six Months Ended
                                                                                   June 30,                    June 30,
                                                                           ----------------------        --------------------
                                                                              2001           2000           2001         2000
                                                                           -------         ------        -------       ------
  <S>                                                                      <C>             <C>           <C>           <C>
  Total revenue.........................................................     100.0%         100.0%         100.0%       100.0%
  Total cost of goods sold..............................................      93.4           53.5          319.2         54.3
                                                                           -------         ------        -------       ------
     Gross (loss) margin................................................       6.6           46.5         (219.2)        45.7
                                                                           -------         ------        -------       ------
  Operating expenses:
     Sales and marketing................................................     128.6           22.8           96.3         25.6
     Research and development...........................................     150.3           19.3          115.3         19.3
     General administrative.............................................     107.2           12.1           80.9         12.6
     Restructuring costs................................................      76.9             --           27.5           --
     In-process research and development................................        --             --           15.2          2.1
     Amortization of intangibles and abandonment of completed
       technology and patents...........................................      94.1            8.6          103.9          6.8
     Noncash compensation expense.......................................       2.2            0.5            1.6          0.6
                                                                           -------         ------        -------       ------
        Total operating expenses........................................     559.3           63.3          440.7         67.0
                                                                           -------         ------        -------       ------
  Loss from operations..................................................    (552.7)         (16.8)        (659.9)       (21.3)
  Interest expense......................................................      (0.1)          (0.7)          (0.2)        (1.2)
  Interest income.......................................................      35.2           11.8           28.3          8.2
  Other income, net.....................................................       3.5             --            1.4           --
                                                                           -------         ------        -------       ------
  Loss before income taxes..............................................     (51.1)          (5.7)        (630.4)       (14.3)
  Income tax expense....................................................        --             --             --           --
                                                                           -------         ------        -------       ------
  Net loss..............................................................    (514.1)%         (5.7)%       (630.4)%      (14.3)%
                                                                           =======         ======        =======       ======
</TABLE>

Three and Six Months Ended June 30, 2001 and 2000

     Revenue. We generate revenue primarily from the sale of hardware products
and, to a lesser extent, through the licensing of our HomeRun technology and
from the sale of software products. Our total revenue decreased to $2.7 million
and $7.6 million for the three and six months ended June 30, 2001, respectively
from $21.0 million and $37.5 million for the three and six months ended June 30,
2000, respectively. The decreases in 2001, when compared to the same periods in
2000, were primarily due to decreased sales of our Expresso MDU products. The
market for our products was markedly different in the first half of 2001 as
compared to the first half of 2000. During the fourth quarter of 2000, our
revenue growth slowed substantially due to (i) several key customers who, in the
latter part of the fourth quarter experienced a rapid deterioration in their
ability to obtain additional capital and, as a result, severely curtailed or
halted their purchases of our product, and (ii) reduced sales volume in the
Korean market. These developments were not unique to our company and have
continued in conjunction with a general downturn in the telecommunications
market throughout the first and second quarters of 2001, affecting our ability
to generate comparatively similar levels of sales. In certain instances, these
developments have made collection of receivables less certain. License and
royalty revenue decreased to $0.2 million and $0.5 million for the three and six
months ended June 30, 2001, respectively, from $0.7 million and $1.0 million for
the three and six months ended June 30, 2000, respectively. The decreases in
2001 when compared to the same periods in 2000 were primarily due to decreases
in royalty payments.

     Cost of Goods Sold/Gross (Loss) Margin. Cost of goods sold consists of raw
materials, contract manufacturing, personnel costs, test and quality assurance
for products, and cost of licensed technology included in the products.
Excluding an additional reserve for excess and obsolete inventory of $18.5
million taken in the first quarter of 2001, our cost of goods sold decreased to
$2.5 million and $5.8 million for the three and six months ended June 30, 2001,
respectively, from $11.2 million and $20.4 million for the three and six months
ended June 30, 2000, respectively. The decreases in 2001, when compared to the
same periods in 2000, were primarily due to decreased sales of our Expresso MDU
products. Gross margin before such additional reserve in the first quarter of
2001, as a percentage of revenue, decreased to 6.6% and 23.9% of revenue for the
three and six months ended June 30, 2001,

                                       17
<PAGE>

respectively, from 46.5% and 45.7% of revenue for three and six months ended
June 30, 2000, respectively. The decreases in gross margin, before such reserve
in the first quarter of 2001, as a percentage of revenue in the first half of
2001 were due primarily to sales price reductions on some of our Expresso MDU
products in response to competitive pricing pressures and to a lesser extent to
fixed manufacturing costs that could not be reduced proportionately in relation
to the decreased revenue in the first half of 2001. During the first quarter of
2001, we recorded an additional reserve for excess and obsolete inventory of
$18.5 million. This reserve is primarily related to the costs of raw materials
and finished goods in excess of what we reasonably expect to sell in the
foreseeable future. Recent market developments, including the writedown of
significant amounts of inventory by competitors and products resold as a result
of bankruptcies within the industry have contributed to substantial
uncertainties related to the value of these inventories. This charge was
included in cost of goods sold resulting in an overall negative gross margin of
(219.2)% for the six months ended June 30, 2001.

     Sales and Marketing. Sales and marketing expense primarily consists of
personnel costs, including commissions and costs related to customer support,
travel, trade shows, promotions, and outside services. Our sales and marketing
expenses decreased to $3.5 million and $7.3 million for the three and six months
ended June 30, 2001, respectively, from $4.8 million and $9.6 million for the
three and six months ended June 30, 2000, respectively. The decreases in 2001,
when compared to the same periods in 2000, were primarily due to our scaling
back of our marketing programs as a cost saving measure in light of the current
market conditions and to a lesser degree, to reduced commission expense on lower
revenue in the first half of 2001. Sales and marketing expenses decreased in
absolute dollars in the second quarter of 2001, as compared to the first quarter
of 2001, and we expect these expenses to remain lower throughout the remainder
of fiscal 2001 as a result of our workforce reduction in April 2001 and our
continued focus on cost saving measures, including decreased spending on
marketing programs throughout the remainder of fiscal 2001.

     Research and Development. Research and development expense primarily
consists of personnel costs related to engineering and technical support,
contract consultants, outside testing services, equipment and supplies
associated with enhancing existing products and developing new products.
Research and development costs are expensed as incurred. Our research and
development expenses increased to $4.1 million and $8.8 million for the three
and six months ended June 30, 2001, respectively, from $4.0 million and $7.2
million the three and six months ended June 30, 2000, respectively. The
increases in 2001, when compared to the same periods in 2000, were primarily due
to the higher headcount in the first half of 2001 due to the fiscal 2000
acquisitions of FreeGate, OneWorld assets and Xstreamis and the first quarter of
2001 acquisition of ActiveTelco, all of which were not a part of Tut in the
entire first half of 2000. Additionally, in the first half of 2001, we amortized
$0.7 million of deferred compensation and notes receivable related to restricted
stock granted to certain FreeGate, OneWorld and ActiveTelco employees to
research and development. Approximately $0.5 million of the remaining deferred
compensation and notes receivable have been recorded as a reduction of equity in
the balance sheet. We intend to recognize the expense ratably over the remaining
period in which the restrictions lapse, currently estimated at two, four and
thirteen months for each of FreeGate, OneWorld and ActiveTelco, respectively.
Research and development expenses decreased in absolute dollars in the second
quarter of 2001, as compared to the first quarter of 2001, and we expect these
expenses to remain lower throughout the remainder of fiscal 2001 as a result of
our workforce reduction in April 2001 and our continued focus on cost saving
measures, including the scale-back, postponement or abandonment of research and
development efforts on certain of our product lines. We expect research and
development activities to represent a significant percentage of our overall
fixed operating expenses throughout fiscal 2001.

     General and Administrative. General and administrative expense primarily
consists of personnel costs for administrative officers and support personnel,
legal, accounting, insurance and consulting fees. Our general and administrative
expenses increased to $2.9 million and $6.2 million for the three and six months
ended June 30, 2001, respectively, from $2.5 million and $4.7 million for the
three and six months ended June 30, 2000, respectively. The increases in 2001,
when compared to the same periods in 2000, were primarily due to additions of
administrative personnel and increases in other costs related to our growth
throughout fiscal 2000. General and administrative expenses decreased in
absolute dollars in the second quarter of 2001, primarily due to a recovery of
bad debt expense of $0.9 million, we expect these expenses to remain lower
throughout the remainder of fiscal 2001, as compared to the first quarter of
2001, as a result of our workforce reduction in April 2001 and our continued
focus on cost saving measures.

                                       18
<PAGE>

     Restructuring Costs. On April 23, 2001, we announced a restructuring
program which included a workforce reduction, closure of excess facilities, and
disposal of certain of its fixed assets. As a result of this restructuring
program, we recorded restructuring costs of $2.1 million for the three and six
months ended June 30, 2001. These restructuring costs were comprised of $1.2
million in workforce reduction charges relating primarily to severance and
fringe benefits, $0.8 million relating to closure of excess facilities and $0.1
million in other fixed assets retired as a result of the workforce reductions.
There were no such expenses incurred in the three and six month periods ended
June 30, 2000.

     In-Process Research and Development. Amounts expensed as in-process
research and development for the six months ended June 30, 2001 and 2000 were
$1.2 million and $0.8 million, respectively, and were related to in-process
research and development purchased from ActiveTelco and FreeGate, respectively.
There were no such expenses incurred for the three months ended June 30, 2001
and 2000.

          In-Process Research and Development, ActiveTelco. Amounts expensed as
     in-process research and development were $1.2 million for the six months
     ended June 30, 2001 and were related to in-process research and development
     purchased from ActiveTelco during the first quarter of 2001. The purchased
     in-process technology was expensed upon acquisition, because technological
     feasibility had not been established and no future alternative uses
     existed. The in-process technology percentage of completion was estimated
     to be 75%. The value of this in-process technology was determined by
     estimating the costs to develop the purchased in-process technology into a
     commercially viable product, estimating the resulting net cash flows from
     the sale of the product resulting from the completion of the in-process
     technology and discounting the net cash flows back to their present value
     using a risk-weighted discount rate of 30%. Research and development costs
     to bring in-process technology from ActiveTelco to technological
     feasibility are not expected to have a material impact on our future
     results of operations or cash flows.

          In-Process Research and Development, FreeGate. Amounts expensed as in-
     process research and development were $0.8 million for the six months ended
     June 30, 2000 and were related to in-process research and development
     purchased from FreeGate during the first quarter of 2000. The purchased in-
     process technology was expensed upon acquisition, because technological
     feasibility had not been established and no future alternative uses
     existed. The in-process technology percentage of completion was estimated
     to be 75%. The value of this in-process technology was determined by
     estimating the costs to develop the purchased in-process technology into a
     commercially viable product, estimating the resulting net cash flows from
     the sale of the product resulting from the completion of the in-process
     technology and discounting the net cash flows back to their present value
     using a risk-weighted discount rate of 30%. In April 2001, as part of our
     cost reduction efforts, we decided not to pursue further incorporation of
     the related OneGate and other intellectual property acquired from FreeGate
     into the design of future products .

     Amortization of Intangibles and Abandonment of Completed Technology and
Patents. Amortization of intangibles and abandonment of completed technology and
patents includes the intangible periodic amortization of intangible assets
related to the purchase acquisitions of Vintel, FreeGate, OneWorld assets,
Xstreamis and ActiveTelco. These intangible assets consist primarily of
assembled workforce, completed technology and patents, and goodwill, and each
are amortized over their estimated useful lives of three, five and five years,
respectively. Amortization of intangibles and abandonment of completed
technology and patents also includes the writedown of completed technology and
patents related to the FreeGate acquisition in the first quarter of 2001.
Amortization of intangibles and abandonment of completed technology and patents
increased to $2.6 million and $7.9 million for the three and six months ended
June 30, 2001, respectively, from $1.8 million and $2.6 million for the three
and six months ended June 30, 2000, respectively. The increase in 2001, when
compared to the same periods in 2000, relates to the amortization of intangibles
during the three and six months ended June 30, 2001 related to the Vintel,
FreeGate, OneWorld assets, Xstreamis and ActiveTelco acquisitions and a $2.7
million charge for abandoned FreeGate completed technology and patents in the
first quarter of 2001. The first half of 2000 only includes amortization of
intangibles related to the November 1999 acquisition of Vintel and partial
amortization of intangibles related to the February 2000 acquisition of
FreeGate, the April 2000 acquisition of OneWorld assets and the May 2000
acquisition of Xstreamis.

     Noncash Compensation Expense. Noncash compensation expense for the three
and six months ended June 30, 2001 and 2000 consisted of the recognition of
expense related to certain employee stock option grants, based on the difference
between the deemed fair value of common stock and the stock option exercise
price at the date of grant.

                                       19
<PAGE>

Our noncash compensation expense was $0.06 million and $0.1 million for the
three and six months ended June 30, 2001, respectively, as compared to $0.1
million and $0.2 million for the three and six months ended June 30, 2000,
respectively. We intend to recognize $0.2 million in additional expenses related
to employee stock options ratably over the remaining vesting period of the
related stock options. Such deferred expense has been recorded as a reduction of
equity in the balance sheet.

     Interest Expense. Interest expense consisted of interest expense associated
with our leases in the first half of 2001 and our credit facilities in the first
half of 2000. Our interest expense decreased to nominal amounts for both the
three and six months ended June 30, 2001, from $0.1 million and $0.4 million for
the three and six months ended June 30, 2000, respectively. The decreases in
2001, when compared to the same periods in 2000, were primarily due to our
paying off the principal owed on our credit facilities in June 2000.

     Interest Income. Interest income consisted of interest income on our cash,
investments and notes receivable balances, offset by the amortization of
premiums paid on investments. Our interest income decreased to $1.0 million and
$2.2 million for the three and six months ended June 30, 2001, respectively,
from $2.5 million and $3.1 million for three and six months ended June 30, 2000,
respectively. The decreases in 2001, when compared to the same periods in 2000,
were primarily due to lower interest income on lower average cash and investment
balances.

Liquidity and Capital Resources

     In March 2000, we completed our secondary offering and issued 2,500,000
shares of our common stock at a price of $60.00 and we received approximately
$141.7 million in cash, net of underwriting discounts, commissions and other
offering costs.

     As of June 30, 2001, we had cash, cash equivalents, and short-term
investments of $61.9 million compared to $102.6 million as of December 31, 2000.

     The net decrease in cash and cash equivalents of $5.7 million during the
six months ended June 30, 2001 resulted primarily from short-term investments of
$42.1 million that matured and $0.2 million in proceeds from the issuance of
common stock related to stock options and purchases of stock through our stock
purchase plan. The increases in cash and cash equivalents from these sources
were offset by uses in operating activities of $39.9 million, purchases of
short-term investments of $7.0 million, $0.9 million for the purchase of
property and equipment and $0.2 million in acquisition costs for ActiveTelco.

     The net increase in cash and cash equivalents of $13.5 million during the
six months ended June 30, 2000 resulted primarily from net proceeds of our
secondary offering of $141.7 million, $18.8 million in proceeds from
short-term investments that matured, $0.8 million in proceeds from the issuance
of common stock related to stock options and purchases of stock through our
stock purchase plan and $0.1 million in proceeds from the sale of other assets.
The increases in cash and cash equivalents from these sources were offset by
purchases of short-term investments of $122.4 million, uses in operating
activities of $13.6 million, the purchase of other assets of $4.5 million, which
includes the acquisition of OneWorld assets for $2.4 million, $4.2 million for
the purchase of property and equipment, $1.8 million in acquisition costs for
FreeGate and Xstreamis and $1.5 million to repay borrowings under a credit
facility.

     In the first quarter of 2000, we entered into a lease for administrative
and engineering facilities in Pleasanton, California. Under the terms of the
lease, we were required to issue a letter of credit in the amount of $1.8
million. The letter of credit is collateralized by restricted funds in the
amount of $1.8 million, which are included in intangibles and other assets as of
June 30, 2001. The letter of credit is reduced annually, beginning July 1, 2001,
by approximately $0.3 million, provided that we are not in default under the
terms of the lease agreement.

     For future periods, we generally anticipate a decrease in working capital
expenditures on a period-to-period basis primarily as a result of completing
payments for purchase commitments for inventory and general decreases in our
operational costs due to our recent workforce reductions.

     We believe that our cash, cash equivalents and short-term investment
balances will be sufficient to satisfy our cash requirements for at least the
next 12 months.

                                       20
<PAGE>

Recent Accounting Pronouncements

  In June 1998, the Financial Accounting Standards Board ("FASB") issued SFAS
No. 133, "Accounting for Derivative Instruments and Hedging Activities," which
establishes accounting and reporting standards for derivative instruments and
hedging activities. It requires an entity to recognize all derivatives as either
assets or liabilities in the balance sheet and measure those instruments at fair
value. We adopted SFAS No. 133 (as amended by SFAS No. 138) as required by SFAS
No. 137, "Deferral of the Effective Date of the FASB Statement No. 133,"
effective January 1, 2001. To date, we have not engaged in derivative and
hedging activities, and accordingly the adoption of SFAS No. 133 did not have a
material impact on our financial statements.

  In June 2001, the EITF issued EITF Issue No. 00-25, "Vendor Income Statement
Characterization of Consideration Paid to a Reseller of the Vendor's Products."
EITF Issue No. 00-25 addresses whether consideration from a vendor to a reseller
is (a) an adjustment of the selling prices of the vendor's products and,
therefore, should be deducted from revenue when recognized in the vendor's
income statement or (b) a cost incurred by the vendor for assets or services
received from the reseller and, therefore, should be included as a cost or
expense when recognized in the vendor's income statement. We will adopt EITF
Issue No. 00-25 effective January 1, 2002. The adoption of EITF Issue No. 00-25
is not expected to have a material impact on our financial statements.

  In July 2001, the Financial Accounting Standards Board ("FASB") issued SFAS
No. 142, Goodwill and Other Intangible Assets, which addresses financial
accounting and reporting for acquired goodwill and other intangible assets and
supersedes APB Opinion No. 17, Intangible Assets. It addresses how intangible
assets that are acquired individually or with a group of other assets (but not
those acquired in a business combination) should be accounted for in financial
statements upon their acquisition. This Statement also addresses how goodwill
and other intangible assets should be accounted for after they have been
initially recognized in the financial statements. We will adopt SFAS No. 142
effective January 1, 2002. We are currently evaluating the impact of SFAS No.
142.

                                       21
<PAGE>

Risk Factors

  YOU SHOULD CAREFULLY CONSIDER THE RISKS DESCRIBED BELOW, TOGETHER WITH ALL OF
THE OTHER INFORMATION INCLUDED IN THIS QUARTERLY REPORT ON FORM 10-Q, BEFORE
MAKING AN INVESTMENT DECISION. THE RISKS AND UNCERTAINTIES DESCRIBED BELOW ARE
NOT THE ONLY ONES FACING US. ADDITIONAL RISKS AND UNCERTAINTIES NOT PRESENTLY
KNOWN TO US OR THAT WE CURRENTLY DEEM IMMATERIAL MAY ALSO IMPAIR OUR BUSINESS
OPERATIONS. THIS QUARTERLY REPORT ON FORM 10-Q CONTAINS "FORWARD-LOOKING"
STATEMENTS THAT INVOLVE RISKS AND UNCERTAINTIES.  OUR ACTUAL RESULTS COULD
DIFFER MATERIALLY FROM THOSE ANTICIPATED IN THESE FORWARD-LOOKING STATEMENTS AS
A RESULT OF CERTAIN FACTORS, INCLUDING THOSE SET FORTH BELOW AND ELSEWHERE IN
THIS QUARTERLY REPORT ON FORM 10-Q.

We have a history of losses and expect future losses.

  We have incurred substantial net losses and experienced negative cash flow
each quarter since our inception. We incurred net losses of $48.0 million for
the six months ended June 30, 2001 and $74.1 million for the year ended December
31, 2000. As of June 30, 2001, we had an accumulated deficit of $178.6 million.
We expect that we will continue to incur losses in 2001, and we may incur losses
in future periods as well.

  We may never achieve or sustain profitability. We have spent substantial
amounts of money on the development of our Expresso products, HomeRun
technology, IntelliPOP product and software products. We intend to continue
increasing certain of our operating expenditures, including our sales and
marketing, research and development and general and administrative expenditures.
We cannot assure you that we will generate a sufficient level of revenue to
offset these expenditures, or that we will be able to adjust spending in a
timely manner to respond to any unanticipated decline in revenue due to the fact
that our expenditures for sales and marketing, research and development, and
general administrative functions are, in the short term, relatively fixed. Our
ability to increase revenue or achieve profitability in the future will
primarily depend on our ability to increase sales of our Expresso products
including selling excess Expresso inventories, successfully launch our
IntelliPOP product, reduce manufacturing costs, sell excess component parts
obtained as a result of canceled purchase commitments and successfully introduce
and sell enhanced versions of our existing products and new products.

  A number of factors could cause our quarterly and annual financial results to
be worse than expected, which could result in a decline in our stock price. Our
annual and quarterly operating results have fluctuated in the past and may
fluctuate significantly in the future as a result of numerous factors, some of
which are outside of our control. These factors include:

  .  availability of capital in the network infrastructure industry;

  .  market acceptance of our products;

  .  competitive pressures, including pricing pressures from our partners and
     competitors particularly in light of recent announcements from competitors
     that they plan on taking significant writedowns in inventory which could
     lead to a general excess of competitive products in the marketplace;

  .  the timing or cancellation of orders from, or shipments to, existing and
     new customers;

  .  the timing of new product and service introductions by us, our customers,
     our partners or our competitors;

  .  variations in our sales or distribution channels;

  .  variations in the mix of products offered by us;

  .  changes in the pricing policies of our suppliers;

  .  the availability and cost of key components; and

                                       22
<PAGE>

  .  the timing of personnel hiring.

  We anticipate that average selling prices for our products will decrease in
the near future due to volume pricing agreements and the need to reduce
relatively high levels of inventory. In addition, we may also experience
substantial period to period fluctuations in future operating results and
declines in gross margin as a result of the erosion of average selling prices
for high-speed data access products and services due to a number of factors,
including competition and rapid technological change. Decreasing the average
selling prices of our products could cause us to experience decreased revenue
despite an increase in the number of units sold. We cannot assure you that we
will be able to sustain our gross margins (even at the anticipated reduced
levels), improve our gross margins by offering new products or increased product
functionality, or offset future price declines with cost reductions.

  As a result of these and other factors, it is possible that in some future
period our operating results will be below the expectations of securities
analysts and investors. In that event, the price of our Common Stock would
likely decline.

Purchases by past customers have decreased dramatically and we must establish a
new base of customers.

  Many of our past customers have significantly reduced or, in some cases, no
access to capital and are experiencing significant financial difficulties,
including bankruptcy. Two customers, RIKEI Corporation and Tsunagu Network
Communications, Inc., accounted for 22% and 10%, respectively, of the Company's
revenue for the three months ended June 30, 2001 and two customers, Kanematsu
Computer System Ltd. and RIKEI Corporation, accounted for 17% and 17%,
respectively, of the Company's revenue for the six months ended June 30, 2001.
Two customers, TriGem InfoComm, Corp. and Darwin Networks, accounted for 30% and
18%, respectively, of the Company's revenue for the three months ended June 30,
2000 and three customers, TriGem InfoComm, Corp., Darwin Networks and I-Quest
Corporation, accounted for 33%, 14% and 10%, respectively, of the Company's
revenue for the six months ended June 30, 2000. In order to meet our revenue
targets, we must continue to acquire new customers and increase sales to our
existing customers. Our strategy of targeting larger, more established customers
may result in longer sales cycles and delayed revenue. Sales to larger accounts
could also result in increased competition from larger and better established
competitors.

We are currently engaged in a securities class action lawsuit which, if it
results in an unfavorable resolution, could adversely affect our business,
results of operations or financial condition.

  On July 12, 2001, a putative shareholder class action lawsuit, entitled Yusty,
et al. v. Tut Systems, Inc., et al., Civil Action No. C-01-2659-JCS was filed in
the United States District Court, Northern District of California against us and
certain of our officers. Similar actions have been filed by other plaintiffs,
including, among others, Streicher v. Tut Systems, Inc., et al., Civil Action
No. C-01-02757-MEJ. The complaints were filed on behalf of a purported class of
people who purchased our stock during the period between July 20, 2000 and
January 31, 2001, seeking unspecified damages. The complaints allege that the
Company and certain of our officers made false and misleading statements about
the Company's business during the putative class period. Specifically, the
complaints allege violations of Section 10(b) and 20(a) of the Securities
Exchange Act of 1934. An unfavorable resolution of this litigation could have a
material adverse effect on our business, results of operations, or financial
condition.

We must reduce our inventory and future purchase commitments.

  Changes in our business have resulted in the accumulation of a substantial
inventory of finished goods and components. In addition, recent announcements of
large-scale inventory writedowns by competitors indicate that the risk of
inexpensive competitive products coming into the marketplace in the near future
has increased significantly. We have provided for losses related to the
cancellation of purchase commitments and allowances for excess and obsolete
finished goods inventories and related raw materials. However, we must sell
existing finished goods inventory and delay or sell finished goods inventory
from future purchase commitments as well as sell component inventory resulting
from deliveries on already canceled purchase commitments. Failure to decrease
our current and future inventory and/or to sell component parts may require that
we take additional charges related to slow moving or obsolete inventory and
components. If we are unable to sell a substantial amount of both the finished
goods and the component inventories, our expected cash position throughout the
year 2001 will be negatively impacted.

                                       23
<PAGE>

We face substantial risk in launching our new IntelliPOP product.

  We are in the process of launching our new IntelliPOP product. Risks
associated with the launch include delays in shipping, software bugs, delays in
product hardware and software testing, and production delays in building the
product. The complexity of the product will require additional customer support
resources. Since the product will include major software components, we plan to
sell software maintenance agreements. Accordingly, revenue associated with such
maintenance agreements will be deferred and recognized over the life of the
underlying support of the product. The launch of our IntelliPOP product may also
cause customers to delay purchases of our existing products. In addition, the
introduction of a new, more complex product, coupled with a search for larger,
more established customers may result in longer sales cycles and delayed
revenue.

Our ability to attract and retain our personnel may be negatively impacted by
the drop in our stock price.

  The drop in our stock price has resulted in most of our outstanding employee
stock options being "under water" or priced substantially above the current
market price. In response to the drop in our stock price, on May 14, 2001, we
offered our employees an stock option exchange program whereby our employees
could tender their existing stock options for cancellation and have such stock
options reissued at a date at least six months and two days later than the date
of cancellation. Accounting and other regulatory concerns prevent or limit our
ability to issue additional stock options to these employees during the period
between cancellation and reissuance. In the interim, those employees who
participated in the stock option exchange offer have and will continue to have
fewer or, in certain cases, no stock options until the lapsing of six months and
two days from the date of such cancellation. Further, for those employees who
did not participate in the stock option exchange offer, such employees have
stock options that are priced substantially above the current market price. In
both cases, our employees may feel that they are receiving inadequate
compensation. If adverse market conditions persist, the attractiveness of our
stock option offerings and the success of our employee stock plans may be
negatively impacted and as a result diminish our ability to attract and retain
qualified personnel.

Changes in the capital markets may negatively impact our business.

  Due to recent changes in the capital markets, including increased volatility
in equity markets and tightening of lending in the credit markets, we believe
that we are exposed to a greater risk that customers will alter their payment
practices to conserve capital. These changes may lead to increases in
outstanding accounts receivable, longer payback periods and increased risk of
default. For example, we increased our provisions recorded on past due accounts
receivable from several key customers who, during the latter part of the fourth
quarter of 2000, experienced a rapid deterioration in their ability to obtain
additional capital to fund their business models, declared their inability to
make timely payments on their accounts and, as of the date of this report, have
not been able to demonstrate the wherewithal to pay their existing account
balances. Two of these customers commenced bankruptcy proceedings. We factor
these increased risks into our assessment of our customers' wherewithal to pay,
and these considerations will likely result in longer revenue deferrals than we
have previously experienced. We also believe that certain of our customers will
alter their deployment plans to meet the constraints imposed by changes in the
capital markets. If we are not able to increase sales in other customer segments
or our sales are otherwise delayed, we may experience volatility in expected
sales growth patterns which would increase the risk of declining sales growth in
any particular quarter.

Difficulties in forecasting product sales could negatively impact our business.

  We base our expense levels in part upon our expectations concerning future
revenue. These expense levels are relatively fixed in the short-term. Orders for
our products, however, may vary from quarter to quarter. In some circumstances,
customers may delay purchasing our current products in favor of next-generation
products. In addition, our new products are generally subject to technical
evaluations that typically last 60 to 90 days. In the case of IntelliPOP, those
evaluations may increase to six months. If orders forecasted for a specific
customer for a particular quarter do not occur in that quarter, our revenue for
that quarter may be less than our forecast. If we have lower revenue in a
quarter than expected, we may not be able to reduce our spending in the short-
term in response to this shortfall and the reduced revenue would have a direct
impact on our results of operations for that quarter. Further, we purchase
components and outsource the manufacturing of our products based on forecasts of
sales. If

                                       24
<PAGE>

orders for products exceed our forecasts, we may have difficulty meeting
customers' orders in a timely manner, which could damage our reputation or
result in lost sales. Conversely, if orders are less than our forecasts, we may
have difficulty in canceling future purchase and manufacturing commitments in a
timely manner, which may result in greater than expected inventory levels and
exposure to losses related to slow moving and obsolete inventory.

We depend on contract manufacturers to manufacture all of our products and rely
upon them to deliver high-quality products in a timely manner.

  We do not manufacture our products. We rely on contract manufacturers to
assemble, test and package our products. We cannot assure you that these
contract manufacturers and suppliers will be able to meet our future
requirements for manufactured products, components and subassemblies. Any
interruption in the operations of one or more of these contract manufacturers
would harm our ability to meet our scheduled product deliveries to customers. In
addition, we believe that current market conditions have placed additional
financial strain on our contract manufacturers. We also intend to regularly
introduce new products and product enhancements, which will require that we
rapidly achieve volume production by coordinating our efforts with those of our
suppliers and contract manufacturers. The inability of our contract
manufacturers to provide us with adequate supplies of high-quality products or
the loss of a current contract manufacturer would cause a delay in our ability
to fulfill customer orders while we obtain a replacement manufacturer and would
harm our business, operating results and financial condition. In addition, we
have canceled certain finished goods and component orders which may have a
negative impact on our ability to diversify our product manufacturing across a
larger base of contract manufacturers. In addition, our inability to accurately
forecast the actual demand for our products could result in supply,
manufacturing or testing capacity constraints. These constraints could result in
delays in the delivery of our products or the loss of existing or potential
customers, either of which could harm our business, operating results or
financial condition.

We depend on contract manufacturers to source all of our raw materials and
component products and rely upon them to deliver these raw materials and
products in a timely manner.

  We currently purchase all of our raw materials and components used in our
products through our contract manufacturers. Components are purchased pursuant
to purchase orders based on forecasts, but neither we nor our contract
manufacturers have any guaranteed supply arrangements with these suppliers. The
availability of many of these components is dependent in part on our ability to
provide our contract manufacturers and their suppliers with accurate forecasts
of our future needs. If we or our manufacturers were unable to obtain a
sufficient supply of components from current sources, we could experience
difficulties in obtaining alternative sources or in altering product designs to
use alternative components. Resulting delays and reductions in product shipments
could damage customer relationships and could harm our business, financial
condition or results of operations. In addition, any increases in component
costs that are passed on to our customers could reduce demand for our products.

We rely on third parties to test substantially all of our products and a failure
to adequately control quality could harm our business.

  Substantially all of our products are assembled and tested by our contract
manufacturers. Although we perform random spot testing on manufactured products,
we rely on our contract manufacturers for assembly and primary testing of our
products. Any quality assurance problems could increase the cost of
manufacturing, assembling or testing our products and could harm our business,
financial condition and results of operation. Moreover, defects in products that
are not discovered in the quality assurance process could damage customer
relationships and result in product returns or liability claims, each of which
could harm our business, financial condition and results of operations.

                                       25
<PAGE>

We purchase several key components from single or limited sources and could lose
sales if these sources fail to fill our needs.

  We currently purchase all of the raw materials and components used in our
products through our contract manufacturers. In procuring components, our
contract manufacturers rely on some suppliers that are the sole source of those
components, and we are dependent upon supplies from these sources to meet our
needs. For example, all of the field programmable gate array supplies used in
our products are purchased from Xilinx and the switching integrated circuit
supplies used in the majority of our products are purchased from Texas
Instruments. Our products are also dependent on various sole source offerings
from Broadcom, Dallas Semiconductor, Metalink US, Motorola, Flextronics
Semiconductor, SaRonix, Siemens and Wind River Systems. If there is any
interruption in the supply of any of the key components currently obtained from
a single or limited source, obtaining these components from other sources could
take a substantial period of time which could cause us to redesign our products
or could disrupt our operations and harm our business, financial condition and
results of operation in any given period.

Our market is subject to rapid technological changes and if we do not address
these changes, our products will become obsolete, harming our business and
ability to compete.

  The markets for high-speed data access products are characterized by rapid
technological developments, frequent enhancements to existing products and new
product introductions, changes in end-user requirements and evolving industry
standards. In addition, the market for high-speed data access products is
dependent in large part on the increased use of the Internet. Issues concerning
the use of the Internet, including security, lost or delayed packets, and
quality of service, may negatively affect the development of the market for our
products. We cannot assure you that we will be able to respond quickly and
effectively to technological change. If we do not address these technological
changes and challenges by regularly introducing new products, our product line
will become obsolete, which would harm our business, financial condition and
results of operations.

Our success depends on our ability to continually introduce new products that
achieve broad market acceptance.

  We must also continually improve the performance, features and reliability of
our products, particularly in response to competitive product offerings. To
remain competitive we need to introduce products in a timely manner that
incorporate or are compatible with these new technologies as they emerge. We may
have only a limited amount of time to penetrate certain markets, and we cannot
assure you that we will be successful in achieving widespread acceptance of our
products before competitors offer products and services similar or superior to
our products. Any delay in product introduction could adversely affect our
ability to compete and cause our operating results to be below our expectations
or the expectations of public market analysts or investors. In addition, when we
announce new products or product enhancements that have the potential to replace
or shorten the life cycle of our existing products, customers may defer
purchasing our existing products.

  These actions could harm our operating results by unexpectedly decreasing
sales, increasing our inventory levels of older products and exposing us to
greater risk of product obsolescence.

Our success depends on continued market acceptance of our Expresso products and
the successful launch of our IntelliPOP product.

  We must devote a substantial amount of human and capital resources in order to
maintain commercial acceptance of our Expresso products and to expand offerings
of the Expresso product line and the launch of our IntelliPOP product in the MDU
and MCU markets and to further penetrate these markets. Historically, the
majority of our Expresso products has been sold into the MDU market. Our future
success depends on the ability to continue to penetrate this market and to
expand our penetration into the MCU market. Our success also depends on our
ability to educate existing and potential customers and end-users about the
benefits of our Fast Copper technology, including HomeRun and LongRun, and our
IntelliPOP product and about the development of new products to meet changing
and expanding demands of service providers, MTU owners and corporate customers.
The success of our Expresso and IntelliPOP products will also depend on the
ability of our service provider customers to market and sell high-speed data
services to end-users. We cannot assure you that our IntelliPOP or our Expresso
products will

                                       26
<PAGE>

achieve or maintain broad commercial acceptance within the MDU market, MCU
market, or in any other market we enter.

The market in which we operate is highly competitive, and we may not be able to
compete effectively.

  The market for multi-service broadband access systems is intensely
competitive, and we expect that this market will become increasingly competitive
in the future. Our most immediate competitors include Cisco, Copper Mountain,
Elastic Networks, Paradyne and a number of other public and private companies.
Many of these competitors are offering or may offer technologies and services
that directly compete with some or all of our high-speed access products and
related software products. Also, many of these competitors have recently
announced significant changes in their business plans and operations, some of
which, such as major writedowns of inventory, could have a negative impact on
our ability to sustain our current pricing or to sell current levels of
inventory. In addition, the market in which we compete is characterized by
increasing consolidation, and we cannot predict with certainty how industry
consolidation will affect us or our competitors.

  Many of our competitors and potential competitors have substantially greater
name recognition and technical, financial and marketing resources than we do,
and we can give you no assurance that we will be able to compete effectively in
our target markets. These competitors may be able to undertake more extensive
marketing campaigns, adopt more aggressive pricing policies and devote
substantially more resources to developing new products than we can. In
addition, our HomeRun licensees may sell products based on our HomeRun
technology to our competitors or potential competitors. This licensing may cause
an erosion in the potential market for our products. We cannot assure you that
we will have the financial resources, technical expertise or marketing,
manufacturing, distribution and support capabilities to compete successfully.
This competition could result in price reductions, reduced profit margins and
loss of market share, which could harm our business, financial condition and
results of operations.

Our copper-wire based solutions face severe competition from other technologies
and the commercial acceptance of any competing solutions could harm our business
and ability to compete.

  The market for high-speed data access products and services is characterized
by several competing technologies, including fiber optic cables, coaxial cables,
satellites and other wireless facilities. These competing solutions provide fast
access, high reliability and cost-effective solutions for some users. Because
many of our products are based on the use of copper telephone wire, and because
there are physical limits to the speed and distance over which data can be
transmitted over this wire, our products may not be a viable solution for
customers requiring service at performance levels beyond the current limits of
copper telephone wire. To the extent that telecommunications service providers
choose to install fiber optic cable or other transmission media in the last
mile, or to the extent that homes and businesses install other transmission
media within buildings, we expect that demand for our products that are based on
copper telephone wires will decline. Commercial acceptance of any one of these
competing solutions or any technological advancement or product introduction
that provides faster access, greater reliability, increased cost-effectiveness
or other advantages over technologies that utilize existing copper telephone
wires could decrease the demand for our products and reduce average selling
prices and gross margins associated with our products. The occurrence of any one
or more of these events could harm our business, financial condition and results
of operations.

Manufacturing or design defects in our products could harm our reputation and
business.

  Any defect or deficiency in our products could reduce the functionality,
effectiveness or marketability of our products. These defects or deficiencies
could cause orders for our products to be canceled or delayed, reduce revenue,
or render our product designs obsolete. In that event, we would be required to
devote substantial financial and other resources for a significant period of
time in order to develop new product designs. We cannot assure you that we would
be successful in addressing any manufacturing or design defects in our products
or in developing new product designs in a timely manner, if at all. Any of these
events, individually or in the aggregate, could harm our business, financial
condition and results of operations.

                                       27
<PAGE>

Changing industry standards may reduce the demand for our products, which will
harm our business.

  We will not be competitive unless we continually introduce new products and
product enhancements that address changing industry standards. The emergence of
new industry standards, whether through adoption by official standards
committees or through widespread use of such standards by telephone companies or
other service providers, could require redesign of our products. If these
standards become widespread and our products are not in compliance, our
customers and potential customers may not purchase our products, which would
harm our business, financial condition and results of operations. The rapid
development of new standards increases the risk that competitors could develop
products that make our products obsolete. Any failure by us to develop and
introduce new products or enhancements directed at new industry standards could
harm our business, financial condition and results of operations. In addition,
selection of competing technologies as standards by standards setting bodies
such as the HomePNA could negatively affect our reputation in the market
regardless of whether our products are standard compliant or demand for our
products does not decline. This selection could be interpreted by the press and
others as having a negative impact on our business which could negatively impact
our stock price.

We may not be able to effectively integrate our recent acquisitions into our
existing business.

  In February 2000, we acquired FreeGate, in May 2000, we acquired Xstreamis,
and in January 2001, we acquired ActiveTelco. We will need to overcome
significant issues in order to realize any benefits from these transactions.
These issues include:

  .  integrating the operations of the geographically dispersed businesses
     acquired into our own operations;

  .  incorporating acquired technology, rights and products into our products
     and services;

  .  developing new products and services that utilize the assets of all
     entities;

  .  the potential disruption of our ongoing business and the distraction of our
     management; and

  .  the potential impairment of relationships with employees, suppliers and
     customers.

We may engage in future acquisitions of companies, technologies or products and
the failure to integrate any future acquisitions could harm our business.

  As a part of our business strategy, we expect to make additional acquisitions
of, or significant investments in, complementary companies, products or
technologies. Any future acquisitions would be accompanied by the risks commonly
encountered in acquisitions of companies. These risks include:

  .  difficulties in assimilating the operations and personnel of the acquired
     companies;

  .  diversion of management's attention from ongoing business concerns;

  .  the potential inability to maximize our financial and strategic position
     through the successful incorporation of acquired technology and rights into
     our products and services;

  .  additional expense associated with amortization of acquired intangible
     assets;

  .  maintenance of uniform standards, controls, procedures and policies; and

  .  impairment of existing relationships with employees, suppliers and
     customers as a result of the integration of new personnel.

  We cannot assure you that we will be able to successfully integrate any
business, products, technologies or personnel that we may acquire in the future,
and our failure to do so could harm our business, operating results and
financial condition.

                                       28
<PAGE>

Failure to effectively manage operations in light of our changing revenue base
will adversely affect our business.

  In the past, we have rapidly and significantly expanded our operations and
anticipate that, in the future, expansion in certain areas of our business may
be required to expand our customer base and exploit market opportunities. In
particular, we expect to face numerous challenges in the implementation of our
business strategy to focus on the larger, more established customers such as
ILECs and PTTs in both domestic and international markets. In addition, the
volatility in our business has placed a significant strain on our managerial and
operational resources. For example, in January 2001 we reduced our workforce by
10% and again in April 2001 by an additional 28% in an effort to control overall
operating expenses in response to recent declines in and expected slowing of our
sales growth.

  To exploit the market for our products, we must develop new and enhanced
products while implementing and managing effective planning and operating
processes. To manage our operations, we must, among other things, continue to
implement and improve our operational, financial and management information
systems, hire and train additional qualified personnel, continue to expand and
upgrade core technologies and effectively manage multiple relationships with
various customers, suppliers and other third parties. We cannot assure you that
our systems, procedures or controls will be adequate to support our operations
or that our management will be able to achieve the rapid execution necessary to
exploit fully the market for our products or systems. If we are unable to manage
our operations effectively, our business, financial condition and results of
operations could be harmed.

We depend on international sales for a significant portion of our revenue, which
could subject our business to a number of risks.

  Sales to customers outside of the United States accounted for approximately
56.3% and 53.8% of revenue for the six month periods ended June 30, 2001 and
2000, respectively. There are a number of risks arising from our international
business, including:

  .  longer receivables collection periods;

  .  increased exposure to bad debt write-offs;

  .  risk of political and economic instability;

  .  difficulties in enforcing agreements through foreign legal systems;

  .  unexpected changes in regulatory requirements;

  .  import or export licensing requirements;

  .  reduced protection for intellectual property rights in some countries; and

  .  currency fluctuations.

  We expect sales to customers outside of the United States to continue to
account for a significant portion of our revenue. However, we can give you no
assurance that foreign markets for our products will not develop more slowly
than currently anticipated. Any failure to increase sales to customers outside
of the United States could harm our business, financial condition and results of
operations.

  We also expend product development and other resources in order to meet
regulatory and technical requirements of foreign countries. We are depending on
sales of our products in these foreign markets in order to recoup the costs
associated with developing products for these markets.

                                       29
<PAGE>

Fluctuations in currency exchange rates may harm our business.

  All of our foreign sales are invoiced in U.S. dollars. As a result,
fluctuations in currency exchange rates could cause our products to become
relatively more expensive for international customers and reduce demand for our
products. We anticipate that foreign sales will generally continue to be
invoiced in U.S. dollars. Accordingly, we do not currently engage in foreign
currency hedging transactions. However, as we expand our current international
operations, we may allow payment in foreign currencies and, as a result,
exposure to foreign currency transaction losses may increase. To reduce this
exposure, we may purchase forward foreign exchange contracts or use other
hedging strategies. However, we cannot assure you that any currency hedging
strategy would be successful in avoiding exchange related losses.

If we fail to protect our intellectual property, or if others use our
proprietary technology without authorization, our competitive position may
suffer.

  Our future success and ability to compete depends in part upon our proprietary
technology. We rely on a combination of copyright, patent, trademark and trade
secrets laws and nondisclosure agreements to establish and protect our
proprietary technology. We currently hold 20 United States patents and have 24
United States patent applications pending. However, we cannot assure you that
patents will be issued with respect to pending or future patent applications
that we have filed or plan to file or that our patents will be upheld as valid
or will prevent the development of competitive products or that any actions we
have taken will adequately protect our intellectual property rights.

  We generally enter into confidentiality agreements with our employees,
consultants, resellers, customers and potential customers, in which we strictly
limit access to and distribution of our software, and further limit the
disclosure and use of our proprietary information. Despite our efforts to
protect our proprietary rights, unauthorized parties may attempt to copy or
otherwise obtain or use our products or technology. Our competitors may also
independently develop technologies that are substantially equivalent or superior
to our technology. In addition, the laws of some foreign countries do not
protect our proprietary rights to the same extent as the laws of the United
States.

We may be subject to intellectual property infringement claims that are costly
to defend and could harm our business and ability to compete.

  We are also subject to the risk of adverse claims and litigation alleging
infringement of the intellectual property rights of others. We cannot assure you
that third parties will not assert infringement claims in the future with
respect to our current or future products. Any such assertion, regardless of its
merit, could require us to pay damages or settlement amounts and could require
us to develop non-infringing technology or acquire licenses to the technology
that is the subject of the asserted infringement. This litigation or potential
litigation could result in product delays, increased costs or both. In addition,
the cost of any litigation and the resulting distraction of our management
resources could harm our business, results of operations or financial condition.
We also cannot assure you that any licenses of technology necessary for our
business will be available or that, if available, these licenses can be obtained
on commercially reasonable terms. Our failure to obtain these licenses could
harm our business, results of operations and financial condition.

If our products do not comply with complex government regulations, our products
may not be sold, preventing us from increasing our revenue or achieving
profitability.

  We and our customers are subject to varying degrees of federal, state and
local regulation. Our products must comply with various regulations and
standards defined by the Federal Communications Commission. The FCC has issued
regulations that set installation and equipment standards for communications
systems. Our products are also required to meet certain safety requirements. For
example, certain of our products must be certified by Underwriters Laboratories
in order to meet federal safety requirements relating to electrical appliances
to be used inside the home. In addition, certain products must be Network
Equipment Building Standard certified before they may be deployed by certain of
our customers. Any delay in or failure to obtain these approvals could harm our
business, financial condition or results of operations. Outside of the United
States, our products are subject to the regulatory requirements of each country
in which our products are manufactured or sold. These requirements are likely to
vary

                                       30
<PAGE>

widely. If we do not obtain timely domestic or foreign regulatory approvals
or certificates, we would not be able to sell our products where these
regulations apply, which may prevent us from sustaining our revenue or achieving
profitability.

  In addition, regulation of our customers may adversely impact our business,
operating results and financial condition. For example, FCC regulatory policies
affecting the availability of data and Internet services and other terms on
which telecommunications companies conduct their business may impede our
penetration of certain markets. In addition, the increasing demand for
communications systems has exerted pressure on regulatory bodies worldwide to
adopt new standards, generally following extensive investigation of competing
technologies. The delays inherent in this governmental approval process may
cause the cancellation, postponement or rescheduling of the installation of
communications systems by our customers, which in turn may harm the sale of
products by us to these customers.

Our success is dependent on our ability to provide adequate customer support.

  Our ability to achieve our planned sales growth and to retain current and
future customers will depend in part upon the quality of our customer support
operations. Our customers generally require significant support and training
with respect to our products, particularly in the initial deployment and
implementation stage. As our systems and products become more complex, we
believe our ability to provide adequate customer support will be increasingly
important to our success. We have limited experience with widespread deployment
of our products to a diverse customer base, and we cannot assure you that we
will have adequate personnel to provide the levels of support that our customers
may require during initial product deployment or on an ongoing basis. In
addition, we rely on a third party for a substantial portion of our customer
support functions, and we believe that the introduction of IntelliPOP will add a
significant layer of complexity to the demands on our customer support
organizations. Our failure to provide sufficient support to our customers could
delay or prevent the successful deployment of our products. Failure to provide
adequate support could also have an adverse impact on our reputation and
relationship with our customers, could prevent us from gaining new customers and
could harm our business, financial condition or results of operations.

If we lose key personnel or are unable to hire additional qualified personnel,
as necessary, we may not be able to successfully manage our business.

  We depend on the performance of Salvatore D'Auria, our President, Chief
Executive Officer and Chairman of the Board, and on other senior management and
technical personnel with experience in the data communications,
telecommunications and high-speed data access industries. The loss of any one of
them could harm our ability to execute our business strategy. Additionally, we
do not have employment contracts with any of our executive officers. We believe
that our future success will depend in large part upon our continued ability to
identify, hire, retain and motivate highly skilled employees, who are in great
demand. We cannot assure you that we will be able to do so.

Our stock price has fluctuated and is likely to continue to fluctuate, and you
may not be able to resell your shares at or above their purchase price.

  The price of our Common Stock has been and is likely to continue to be highly
volatile. Our stock price could fluctuate widely in response to factors such as
the following:

  . actual or anticipated variations in operating results;

  . announcements of technological innovations, new products or new services by
    us or by our partners, competitors or customers;

  . changes in financial estimates or recommendations by stock market analysts
    regarding us or our competitors;

  . conditions or trends in the telecommunications industry, including
    regulatory developments;

  . growth of the Internet;

                                       31
<PAGE>

  . announcements by us of significant acquisitions, strategic partnerships,
    joint ventures or capital commitments;

  . additions or departures of key personnel;

  . future equity or debt offerings or our announcements of these offerings; and

  . general market and general economic conditions.

  In addition, in recent years, the stock market in general, and the Nasdaq
National Market and the securities of Internet and technology companies in
particular, have experienced extreme price and volume fluctuations with severe
drops in recent months. These fluctuations have often been unrelated or
disproportionate to the operating performance of these technology companies.
These market and industry factors may harm our stock price, regardless of our
operating results.

Our charter, bylaws, retention and change of control plans and Delaware law
contain provisions that could delay or prevent a change in control.

  Certain provisions of our charter and bylaws and our retention and change of
control plans (the "Plans") may have the effect of making it more difficult for
a third party to acquire, or of discouraging a third party from attempting to
acquire, control of us. The provisions of the charter and bylaws and the Plans
could limit the price that certain investors may be willing to pay in the future
for shares of our common stock. Our charter and bylaws provide for a classified
board of directors, eliminate cumulative voting in the election of directors,
restrict our stockholders from acting by written consent and calling special
meetings, and provide for procedures for advance notification of stockholder
nominations and proposals. In addition, our board of directors has the authority
to issue up to 5,000,000 shares of preferred stock and to determine the price,
rights, preferences, privileges and restrictions, including voting rights, of
those shares without any further vote or action by the stockholders. The
issuance of preferred stock, while providing flexibility in connection with
possible financings or acquisitions or other corporate purposes, could have the
effect of making it more difficult for a third party to acquire a majority of
our outstanding voting stock. The Plans provide for severance payments and
accelerated stock option vesting in the event of termination of employment
following a change of control. The provisions of the charter and bylaws, and the
Plans, as well as Section 203 of the Delaware General Corporation Law, to which
we are subject, could discourage potential acquisition proposals, delay or
prevent a change of control and prevent changes in our management.

Future sales of our Common Stock could depress our stock price.

  Sales of a substantial number of shares of our Common Stock in the public
market, or the appearance that these shares are available for sale, could harm
the market price of our Common Stock. These sales also may make it more
difficult for us to sell equity securities or equity-related securities in the
future at a time and price that we deem appropriate. As of June 30, 2001, we had
16,364,055 shares outstanding. Of these shares, 16,026,935 shares of Common
Stock are currently available for sale in the public market, some of which are
subject to volume and other limitations under securities laws.

Our facilities are located near known earthquake fault zones, and the occurrence
of an earthquake or other natural disaster could cause damage to our facilities
and equipment which could require us to curtail or cease operations.

  Our facilities are located in the San Francisco Bay Area near known earthquake
fault zones and are vulnerable to damage from earthquakes. In October 1989, a
major earthquake that caused significant property damage and a number of
fatalities struck this area. We are also vulnerable to damage from other types
of disasters, including fire, floods, power loss, communications failures and
similar events. If any disaster were to occur, our ability to operate our
business at our facilities could be seriously, or completely, impaired. The
insurance we maintain may not be adequate to cover our losses resulting from
disasters or other business interruptions.

                                       32
<PAGE>

We rely on a continuous power supply to conduct our operations, and California's
current energy crisis could disrupt our operations and increase our expenses.

  California is in the midst of an energy crisis that could disrupt our
operations and increase our expenses. In the event of an acute power shortage,
that is, when power reserves for the State of California fall below 1.5%,
California has on some occasions implemented, and may in the future continue to
implement, rolling blackouts throughout California. We currently do not have
backup generators or alternate sources of power in the event of a blackout, and
our current insurance does not provide coverage for any damages we, or our
customers, may suffer as a result of any interruption in our power supply. If
blackouts interrupt our power supply, we would be temporarily unable to continue
operations at our facilities. Any such interruption in our ability to continue
operations at our facilities could damage our reputation, harm our ability to
retain existing customers and to obtain new customers, and could result in lost
revenue, any of which could substantially harm our business and results of
operations.

ITEM 3.   QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

  We are exposed to changes in interest rates primarily from our investments in
certain held-to-maturity securities. Under our current policies, we do not use
interest rate derivative instruments to manage exposure to interest rate
changes. A hypothetical 100 basis point adverse move in interest rates along the
entire interest rate yield curve would not materially affect the fair value of
interest sensitive financial instruments at June 30, 2001.

  At June 30, 2001, we held an investment in commercial paper issued by Southern
California Edison Company. This investment is included in short-term investments
at a carrying value of approximately $9.0 million which matured in January 2001
and is currently in default. We believe that the fair value of this investment
has declined since the balance sheet date. However, at this time, we cannot
practicably determine the ultimate amount of the decline and the net realizable
value of this investment.

  We have no investments, nor are any significant sales, expenses, or other
financial items denominated in foreign country currencies. All of our
international sales are denominated in U.S. dollars. An increase in the value of
the U.S. dollar relative to foreign currencies could make our products more
expensive and, therefore, reduce the demand for our products.

                                       33
<PAGE>

                         PART II.   OTHER INFORMATION

ITEM 1.   LEGAL PROCEEDINGS

  On July 12, 2001, a putative shareholder class action lawsuit, entitled Yusty,
et al. v. Tut Systems, Inc., et al., Civil Action No. C-01-2659-JCS was filed in
the United States District Court, Northern District of California against us and
certain of our officers. Similar actions have been filed by other plaintiffs,
including, among others, Streicher v. Tut Systems, Inc., et al., Civil Action
No. C-01-02757-MEJ. The complaints were filed on behalf of a purported class of
people who purchased our stock during the period between July 20, 2000 and
January 31, 2001, seeking unspecified damages. The complaints allege that the
Company and certain of our officers made false and misleading statements about
the Company's business during the putative class period. Specifically, the
complaints allege violations of Section 10(b) and 20(a) of the Securities
Exchange Act of 1934. An unfavorable resolution of this litigation could have a
material adverse effect on our business, results of operations, or financial
condition.

ITEM 2.   CHANGES IN SECURITIES AND USE OF PROCEEDS

  None

ITEM 3.   DEFAULTS UPON SENIOR SECURITIES

  None

ITEM 4.   SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

  The Company's Annual Meeting of Stockholders was held on May 16, 2001 (the
"Annual Meeting"). At the Annual Meeting, stockholders voted on two matters: (i)
the election of three Class III directors for terms of three years expiring in
2004, and (ii) the ratification of the appointment of PricewaterhouseCoopers LLP
as the Company's independent auditors. The stockholders elected management's
nominees as the Class III directors in an uncontested election and ratified the
appointment of the independent auditors by the following votes, respectively:

  (i) Election of Class III directors for terms expiring in 2004:

                                         Votes For          Votes Against
                                         ---------          -------------

Salvatore D'Auria................        13,819,913            125,912
Roger Moore......................        13,826,947            118,878
Saul Rosenzweig..................        13,825,099            120,726

  The Company's Board of Directors is currently comprised of nine members who
are divided into three classes with overlapping three-year terms.

  (ii) Ratification of appointment of PricewaterhouseCoopers LLP as independent
auditors:

      Votes For             Votes Against           Votes Abstained
      ---------             -------------           ---------------

     13,316,107                616,971                   12,747

ITEM 5.   OTHER INFORMATION

  None

ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K

  (a)  Exhibits

Exhibit
Number    Description
------    -----------

 2.1      Agreement and Plan of Reorganization dated as of October 15, 1999, by
          and among the Company, Vintel Acquisition Corp., and Vintel
          Communications, Inc.(3)


                                       34
<PAGE>

 2.2      Agreement and Plan of Reorganization dated as of June 8, 1999, by and
          among the Company, Public Port Acquisition Corporation, and Public
          Port, Inc.(2)

 2.3      Agreement and Plan of Reorganization dated as of November 16, 1999, as
          amended, by and among the Company, Fortress Acquisition Corporation
          and FreeGate Corporation.(4)

 2.4      Asset Purchase Agreement by and between the Company and OneWorld
          Systems, Inc. dated as of February 3, 2000.(5)

 2.5      Amendment No. 1 to Asset Purchase Agreement by and between the Company
          and OneWorld Systems, Inc. dated as of February 17, 2000.(5)

 2.6      Agreement for the sale and purchase of the entire share capital of
          Xstreamis plc, by and among the Company, the shareholders of Xstreamis
          plc and Philip Corbishley.(6)

 2.7      Agreement and Plan of Reorganization dated as of December 21, 2000, by
          and among the Company, ActiveTelco Incorporated, ActiveTelco
          Acquisition Corporation, and, with respect to Article VII only, Azeem
          Butt, as shareholder representative, and U.S. Bank Trust, as escrow
          agent.(7)

 3.1      Second Amended and Restated Certificate of Incorporation of the
          Company.(1)

 3.2      Bylaws of the Company, as currently in effect.(1)

 4.1      Specimen Common Stock Certificate.(1)

 10.25    Indemnification Agreement by and between the Company and Alida Rincon,
          effective as of March 3, 2000.

 10.26    Indemnification Agreement by and between the Company and Marilyn
          Lobel, effective as of April 17, 2001.

 11.1     Calculation of net loss per share (contained in Note 3 of Notes to
          Condensed Consolidated Financial Statements).

______________
(1) Incorporated by reference to our Registration Statement on Form S-1 (File
    No. 333-60419) as declared effective by the Securities and Exchange
    Commission on January 28, 1999.

(2) Incorporated by reference to our Quarterly Report on Form 10-Q for the
    quarter ended June 30, 1999.

(3) Incorporated by reference to our Quarterly Report on Form 10-Q for the
    quarter ended September 30, 1999.

(4) Incorporated by reference to our Current Report on Form 8-K dated February
    14, 2000.

(5) Incorporated by reference to our Annual Report on Form 10-K for the year
    ended December 31, 1999.

(6) Incorporated by reference to our Current Report on Form 8-K dated May 26,
    2000 as filed June 9, 2000.

(7) Incorporated by reference to our Current Report on Form 8-K dated January
    18, 2001.

    (b)  Reports on Form 8-K.

    The Company did not file any reports on Forms 8-K during the quarter ended
    June 30, 2001.

                                       35
<PAGE>

                                   SIGNATURE

  Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.


                                  TUT SYSTEMS, INC.
Date: August 1, 2001


                                  /s/ NELSON CALDWELL
                                  --------------------------------------------
                                  Nelson Caldwell
                                  Vice President, Finance and Chief Financial
                                   Officer (Principal Financial and Accounting
                                   Officer and Duly Authorized Officer)

                                       36
<PAGE>

                               INDEX TO EXHIBITS

<TABLE>
<CAPTION>
 Exhibit
---------
 Number                                                 Description
---------                                               -----------
<S>        <C>
   2.1     Agreement and Plan of Reorganization dated as of October 15, 1999, by and among the Company, Vintel
           Acquisition Corp., and Vintel Communications, Inc.(3)

   2.2     Agreement and Plan of Reorganization dated as of June 8, 1999, by and among the Company, Public Port
           Acquisition Corporation, and Public Port, Inc.(2)

   2.3     Agreement and Plan of Reorganization dated as of November 16, 1999, as amended, by and among the
           Company, Fortress Acquisition Corporation and FreeGate Corporation.(4)

   2.4     Asset Purchase Agreement by and between the Company and OneWorld Systems, Inc. dated as of February
           3, 2000.(5)

   2.5     Amendment No. 1 to Asset Purchase Agreement by and between the Company and OneWorld Systems, Inc.
           dated as of February 17, 2000.(5)

   2.6     Agreement for the sale and purchase of the entire share capital of Xstreamis plc, by and among the
           Company, the shareholders of Xstreamis plc and Philip Corbishley.(6)

   2.7     Agreement and Plan of Reorganization dated as of December 21, 2000, by and among the Company,
           ActiveTelco Incorporated, ActiveTelco Acquisition Corporation, and, with respect to Article VII
           only, Azeem Butt, as shareholder representative, and U.S. Bank Trust, as escrow agent.(7)

   3.1     Second Amended and Restated Certificate of Incorporation of the Company.(1)

   3.2     Bylaws of the Company, as currently in effect.(1)

   4.1     Specimen Common Stock Certificate.(1)

 10.25     Indemnification Agreement by and between the Company and Alida Rincon, effective as of March 3, 2000.

 10.26     Indemnification Agreement by and between the Company and Marilyn Lobel, effective as of April 17,
           2001.

  11.1     Calculation of net loss per share (contained in Note 3 of Notes to Condensed Consolidated Financial
           Statements).
</TABLE>
__________________
(1) Incorporated by reference to our Registration Statement on Form S-1 (File
    No. 333-60419) as declared effective by the Securities and Exchange
    Commission on January 28, 1999.

(2) Incorporated by reference to our Quarterly Report on Form 10-Q for the
    quarter ended June 30, 1999.

(3) Incorporated by reference to our Quarterly Report on Form 10-Q for the
    quarter ended September 30, 1999.

(4) Incorporated by reference to our Current Report on Form 8-K dated February
    14, 2000.

(5) Incorporated by reference to our Annual Report on Form 10-K for the year
    ended December 31, 1999.

(6) Incorporated by reference to our Current Report on Form 8-K dated May 26,
    2000 as filed June 9, 2000.

(7) Incorporated by reference to our Current Report on Form 8-K dated January
    18, 2001.

                                      37