# UNITED STATESSECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549

---

# FORM 10-Q

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

# For the quarterly period ended July 2, 2004

# OR

|       |  |                                             
|------ |  | --------------------------------------------
|[    ] |  | TRANSITION REPORT PURSUANT TO SECTION 13 OR 
|       |  | 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

# For the transition period from _______________to______________

# Commission file Number: 0-09692

# TELLABS, INC.

(Exact name of registrant as specified in its charter)

|                                         |  |                    
|---------------------------------------- |  | -------------------
|Delaware                                 |  | 36-3831568         
|(State of Incorporation)                 |  | (I.R.S. Employer   
|                                         |  | Identification No.)
|                                         |  |                    
|One Tellabs Center, 1415 W. Diehl Road,  |  |                    
|Naperville, Illinois                     |  | 60563              
|(Address of Principal Executive Offices) |  | (Zip Code)         

Registrants telephone number, including area code:
 (630) 798-8800

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 XNO___

Indicate by check mark whether the registrant is an
 accelerated filer (as defined in Rule 12b-2 of the Exchange Act).     YES X
 NO___

Common Shares, $.01 Par Value  416,213,149 shares
 outstanding on July 2, 2004.

---

# TELLABS, INC. 
INDEX

|          |  |                                                                                       |  | PAGE
|--------- |  | ------------------------------------------------------------------------------------- |  | ----
|          |  |                                                                                       |  |     
|PART I.   |  | FINANCIAL INFORMATION                                                                 |  |     
|          |  |                                                                                       |  |     
|Item 1.   |  | Financial Statements:                                                                 |  |     
|          |  |                                                                                       |  |     
|          |  | Condensed Consolidated Statements of Operations                                       |  | 3   
|          |  |                                                                                       |  |     
|          |  | Condensed Consolidated Balance Sheets                                                 |  | 4   
|          |  |                                                                                       |  |     
|          |  | Condensed Consolidated Statements of Cash Flow                                        |  | 5   
|          |  |                                                                                       |  |     
|          |  | Notes to Condensed Consolidated Financial Statements                                  |  | 6   
|          |  |                                                                                       |  |     
|Item 2.   |  | Management's Discussion and Analysis of Financial Condition and Results of Operations |  | 12  
|          |  |                                                                                       |  |     
|Item 3.   |  | Quantitative and Qualitative Disclosures about Market Risk                            |  | 15  
|          |  |                                                                                       |  |     
|Item 4.   |  | Controls and Procedures                                                               |  | 15  
|          |  |                                                                                       |  |     
|PART II.  |  | OTHER INFORMATION                                                                     |  |     
|          |  |                                                                                       |  |     
|Item 1.   |  | Legal Proceedings                                                                     |  | 15  
|          |  |                                                                                       |  |     
|Item 2.   |  | Changes in Securities, Use of Proceeds and Issuer
Purchases of Equity Securities      |  | 16  
|          |  |                                                                                       |  |     
|Item 4.   |  | Submission of Matters to a Vote of Security Holders                                   |  | 16  
|          |  |                                                                                       |  |     
|Item 6.   |  | Exhibits and Reports on Form 8-K                                                      |  | 17  
|          |  |                                                                                       |  |     
|SIGNATURE |  |                                                                                       |  | 18  

2

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# PART I. FINANCIAL INFORMATION

# Item 1. Financial Statements

# TELLABS, INC.
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
(Unaudited)

|                                                      | Three Months Ended |        | Six Months Ended
|----------------------------------------------------- | ------------------ | ------ | ----------------
|
|                                                     
|Revenue                                               |                    |        |                 
|Product and other                                     |                    | $263.5 |                 
|Services                                              |                    | 40.8   |                 
|                                                     
|                                                      |                    | 304.3  |                 
|Cost of Revenue                                       |                   
|Product and other                                     |                    | 102.1  |                 
|Services                                              |                    | 27.4   |                 
|                                                     
|                                                      |                    | 129.5  |                 
|                                                     
|Gross Profit                                          |                    | 174.8  |                 
|                                                      |                    |        |                 
|Gross profit as a percentage of revenue               |                    | 57.4%  |                 
|                                                      |                    |        |                 
|Operating expenses                                    |                   
|Selling, general and administrative                   |                    | 57.2   |                 
|Research and development                              |                    | 61.1   |                 
|Restructuring & other charges                         |                    | (2.0)  |                 
|Intangible asset amortization                         |                    | 3.9    |                 
|                                                     
|                                                      |                    | 120.2  |                 
|                                                      |                    |        |                 
|Operating Earnings/(Loss)                             |                    | 54.6   |                 
|                                                      |                    |        |                 
|Other Income/(Expense)                                |                    |        |                 
|Interest income, net                                  |                    | 6.3    |                 
|Other                                                 |                    | (1.0)  |                 
|                                                     
|                                                      |                    | 5.3    |                 
|                                                      |                    |        |                 
|Earnings/(Loss) Before Income Tax                     |                    | 59.9   |                 
|Income tax (expense)/benefit                          |                    | (10.3) |                 
|                                                     
|Net Earnings/(Loss)                                   |                    | $49.6  |                 
|                                                     
|                                                      |                    |        |                 
|Net Earnings/(Loss) Per Share                         |                    |        |                 
|Basic                                                 |                    | $0.12  |                 
|                                                     
|Diluted                                               |                    | $0.12  |                 
|                                                     
|                                                      |                    |        |                 
|Average number of common shares outstanding - Basic   |                    | 416.1  |                 
|                                                     
|Average number of common shares outstanding - Diluted |                    | 420.3  |                 
|                                                     

The
 accompanying notes are an integral part of these statements.

3

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# TELLABS, INCCONDENSED CONSOLIDATED BALANCE SHEETS

|                                                               | 7/2/04 | 1/2/04      
|-------------------------------------------------------------- | ------ | ------------
|                                                              
|
|                                                              
|Assets                                                         |        |             
|Current Assets                                                 |       
|Cash and cash equivalents                                      |        | $        273
|Investments in marketable securities                           |        | 968         
|                                                              
|                                                               |        | 1,241       
|Accounts receivable, net                                       |        | 180         
|Inventories                                                    |        |             
|Raw materials                                                  |        | 13          
|Work in process                                                |        | 4           
|Finished goods                                                 |        | 38          
|                                                              
|                                                               |        | 55          
|Income taxes                                                   |        | 14          
|Miscellaneous receivables and other current assets             |        | 77          
|                                                              
|Total Current Assets                                           |        | 1,570       
|                                                               |        |             
|Property, Plant and Equipment                                  |        | 548         
|Less: accumulated depreciation                                 |        | (269        
|                                                              
|                                                               |        | 279         
|Goodwill                                                       |        | 551         
|Intangible assets, net                                         |        | 98          
|Other assets                                                   |        | 125         
|                                                              
|Total Assets                                                   |        | $    2,625  
|                                                              
|                                                               |        |             
|Liabilities and Stockholders' Equity                           |       
|Current Liabilities                                            |        |             
|Accounts payable                                               |        | $         52
|Accrued liabilities                                            |        | 104         
|Accrued restructuring and other liabilities                    |        | 25          
|                                                              
|Total Current Liabilities                                      |        | 182         
|                                                               |        |             
|Long-term restructuring and other liabilities                  |        | 37          
|Income taxes                                                   |        | 101         
|Other long-term liabilities                                    |        | 36          
|                                                               |        |             
|Stockholders' Equity                                           |        |             
|Preferred stock: authorized 5,000,000 shares of $.01 par       |        |             
|value; no shares issued and outstanding                        |        |             
|Common stock: 1,000,000,000 shares of $.01 par value;          |        |             
|419,463,149 and 417,859,719 shares issued, including           |        |             
|treasury stock                                                 |        | 4           
|Additional paid-in capital                                     |        | 562         
|Deferred compensation expense                                  |        | (7          
|Treasury stock, at cost: 3,250,000 shares                      |        | (129        
|Accumulated other comprehensive income                         |        |             
|Cumulative translation adjustment                              |        | 75          
|Unrealized net (losses)/gains on available-for-sale securities |        | (2          
|                                                              
|Total accumulated other comprehensive income                   |        | 72          
|Retained earnings                                              |        | 1,764       
|                                                              
|Total Stockholders' Equity                                     |        | 2,267       
|                                                              
|Total Liabilities and Stockholders' Equity                     |        | $    2,625  
|                                                              

The
 accompanying notes are an integral part of these statements.

4

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# TELLABS INC.CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOW (Unaudited)

|                                                          |  | Six Months Ended
|--------------------------------------------------------- |  | ----------------
|                                                         
|
|                                                         
|Operating Activities                                      |  |                 
|Net earnings/(loss)                                       |  | $       63      
|Adjustments to reconcile net earnings/(loss) to net cash  |  |                 
|provided by operating activities:                         | 
|Restructuring and other charges                           |  | 10              
|Depreciation and amortization                             |  | 40              
|(Loss)/gain on investments and other                      |  | (4              
|Net change in assets and liabilities, net of effects from | 
|acquisitions:                                             |  |                 
|Accounts receivable                                       |  | 14              
|Inventories                                               |  | (14             
|Income tax receivable                                     |  | 15              
|Miscellaneous receivables and other current assets        |  | 35              
|Long-term assets                                          |  | (8              
|Accounts payable                                          |  | 4               
|Accrued liabilities                                       |  | 21              
|Accrued restructuring and other charges                   |  | (40             
|Income taxes payable                                      |  | (3              
|Long-term liabilities                                     |  | (3              
|                                                         
|Net Cash Provided by Operating Activities                 |  | 130             
|                                                         
|                                                          |  |                 
|Investing Activities                                      |  |                 
|Capital expenditures                                      |  | (18             
|Disposals of property, plant and equipment                |  | 14              
|Proceeds from sales and maturities of investments         |  | 509             
|Payments for purchases of investments                     |  | (607            
|Payments for acquisitions, net of cash acquired           |  |                 
|                                                         
|Net Cash Used for Investing Activities                    |  | (102            
|                                                         
|                                                          |  |                 
|Financing Activities                                      |  |                 
|Proceeds from issuance of common stock                    |  | 3               
|                                                         
|Net Cash Provided by Financing Activities                 |  | 3               
|Effect of Exchange Rate Changes on Cash                   |  | (3              
|                                                         
|Net Increase/(Decrease) in Cash and Cash Equivalents      |  | 27              
|Cash and Cash Equivalents at Beginning of Year            |  | 245             
|                                                         
|Cash and Cash Equivalents at End of Period                |  | $     273       
|                                                         

The
 accompanying notes are an integral part of these statements.

5

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# TELLABS, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

# 1. Basis of Presentation

Our accompanying unaudited condensed
consolidated financial statements have been prepared in accordance with generally accepted
accounting principles for interim financial statements and the requirements of Form 10-Q
and applicable rules of Regulation S-X and accordingly do not include all disclosures
normally required by generally accepted accounting principles for complete financial
statements. Accordingly, the financial statements and notes herein should be read in
conjunction with our Annual Report on Form 10-K for the year ended January 2, 2004.

In our opinion, the accompanying
unaudited condensed consolidated financial statements include all adjustments (consisting
of normal recurring accruals) that are necessary for a fair presentation. Operating
results for interim periods are not necessarily indicative of operating results for the
full year.

# 2. New Accounting
Pronouncements

In December 2003, the FASB issued
Statement No. 132 (revised 2003), Employers Disclosures about Pensions and Other
Postretirement Benefits. This Statement revises employers disclosures about
pension plans and other postretirement benefit plans. This revised Statement was adopted
during the first quarter of 2004 for interim period disclosures and did not have a
material impact on our financial statements.

In January 2003, the FASB issued
FIN 46, Consolidation of Variable Interest Entities. FIN 46 requires a variable
interest entity to be consolidated by an equity investor if that investor is subject to a
majority of the risk of loss from the variable interest entitys activities, is
entitled to receive a majority of the entitys residual returns, or both. This
interpretation was adopted during the first quarter of 2004 and did not have a material
impact on our financial statements.

# 3. Acquisition

In May 2004, we entered into a
definitive merger agreement under which we will acquire Advanced Fibre Communications,
Inc. (AFC), a leader in access products. AFCs products allow carriers to
provide voice, video and high-speed internet access over a single network infrastructure.
Under the terms of the merger agreement, which was approved by both companies boards
of directors, AFC stockholders will receive 1.55 shares of Tellabs common stock and $7.00
in cash for each AFC share. Based on Tellabs closing stock price of $9.19 per share
on May 19, 2004, the last trading date prior to the public announcement of the merger,
this represents approximately $21.24 in value per AFC share, or a total value of
approximately $1.9 billion. An estimated 136.3 million common shares of Tellabs stock will
be issued for the acquisition, with the cash portion financed with cash on hand, including
AFCs cash. Upon completion of the transaction, Tellabs stockholders will own
approximately 75% of the company and AFC stockholders will own approximately 25%. This
transaction is currently expected to close during the fourth quarter of 2004, subject to
satisfaction of various closing conditions including approval by the stockholders of
Tellabs and AFC. The merger has been approved by the Federal Trade Commission.

Following AFCs announcement of
its second quarter results and outlook for the balance of 2004, the Tellabs Board of
Directors requested that Tellabs management conduct a further review and analysis of
AFCs business and financial outlook and provide the Board with an update. Management
is in the process of conducting such review in coordination with AFC.

See further discussion of this
transaction in our Form S-4 filed with the Securities and Exchange Commission on June 23,
2004.

# 4. Restructuring and
Other Charges

In 2003, management approved plans to
further restructure our operations due to the difficult market conditions in the
telecommunications industry. A major component of the restructuring was the outsourcing of
our global manufacturing operations, which resulted in workforce reductions of
approximately 500 employees globally, facility closures, asset disposals and the sale of
the majority of our inventory to the outsourcers. Additional restructuring activities
during 2003 included non-manufacturing workforce reductions and facility closures. As a
result of these actions, we recorded charges for severance and related costs, asset
impairments and accelerated depreciation on our manufacturing facility in North America.
We also recorded charges for excess and obsolete inventories and excess purchase
commitments. Our manufacturing operations in North America ceased at the end of October
2003 and international manufacturing operations ceased at the beginning of January 2004.
We recorded restructuring and other charges related to all of the above activities in the
second, third and fourth quarters of 2003, and the first and second quarters of 2004. We
expect to incur minimal additional restructuring charges for previously announced
restructuring activities. For further discussion of our restructuring activities, refer to
our Annual Report on Form 10-K for the year ended January 2, 2004.

6

---

Below is an analysis of the
restructuring and other charges recorded during the second quarter of 2004 and 2003 by
major income statement classification:

|(in millions)      |  |                                                           | 
|------------------ |  | --------------------------------------------------------- | 
|                  
|
|                  
|Cost of revenue    |  | Inventory adjustments                                     | 
|                   |  | Disposal of property, plant and equipment                 | 
|                   |  | Purchase commitments                                      | 
|                   |  | Other obligations                                         | 
|                  
|                   |  | Total in cost of revenue                                  | 
|                  
|Operating Expenses |  | Severance and related expenses                            | 
|                   |  | Consolidation of excess leased facilities                 | 
|                   |  | Disposal of property, plant and equipment                 | 
|                   |  | Other obligations                                         | 
|                  
|                   |  | Sub-total                                                 | 
|                  
|                   |  | Adjustment to severance accruals                          | 
|                   |  | Proceeds from fixed asset disposals
in excess of reserves | 
|                   |  | Adjustment of leased facilities
reserve                   | 
|                  
|                   |  | Total in operating expenses                               | 
|                  
|                   |  |                                                           | 
|                  

Below is an analysis of the
restructuring and other charges recorded year-to-date through the second quarter of 2004 and 2003 by
major income statement classification:

|(in millions)      |  |                                                           | 
|------------------ |  | --------------------------------------------------------- | 
|                  
|
|                  
|Cost of revenue    |  | Inventory adjustments                                     | 
|                   |  | Disposal of property, plant and equipment                 | 
|                   |  | Purchase commitments                                      | 
|                   |  | Other obligations                                         | 
|                  
|                   |  | Sub-total                                                 | 
|                   |  | Reduction of excess purchase
commitments reserve          | 
|                  
|                   |  | Total in cost of revenue                                  | 
|                  
|Operating Expenses |  | Severance and related expenses                            | 
|                   |  | Consolidation of excess leased facilities                 | 
|                   |  | Disposal of property, plant and equipment                 | 
|                   |  | Other obligations                                         | 
|                  
|                   |  | Sub-total                                                 | 
|                  
|                   |  | Adjustment to severance accruals                          | 
|                   |  | Proceeds from fixed asset disposals
in excess of reserves | 
|                   |  | Reduction of leased facilities
accrual                    | 
|                  
|                   |  | Total in operating expenses                               | 
|                  
|                   |  |                                                           | 
|                  

7

---

The following table displays our restructuring and
 other charges activity during the first six months of 2004 and the status of the reserves at July 2, 2004:

|                      |  |    |     |          |     |          |     | Consol. of |     | Disposal of |     |        |     |           
|--------------------- |  | -- | --- | -------- | --- | -------- | --- | ---------- | --- | ----------- | --- | ------ | --- | ----------
|
|
|
|                     
|Balance at 1/2/04     |  | $  | -   | $     38 | .4  | $     13 | .5  | $     54   | .8  | $           | -   | $    2 | .9  | $     109 
|Additional reserves   |  | 2  | .3  |          | -   | 4        | .1  | 1          | .4  | 12          | .9  | 2      | .6  | 23        
|Cash paid             |  |    | -   | (14      | .7) | (7       | .6) | (3         | .5) |             | -   | (2     | .5) | (28       
|Non-Cash activity (a) |  | (2 | .3) | (12      | .0) |          | -   | (0         | .5) | (12         | .9) |        | -   | (27       
|                     
|Balance at 4/2/04     |  | $  | -   | $     11 | .7  | $     10 | .0  | $     52   | .2  | $           | -   | $    3 | .0  | $       76
|                     
|Additional reserves   |  |    | -   |          | -   | 0        | .9  | 0          | .3  | 5           | .1  | 1      | .2  | 7         
|Cash paid             |  |    | -   | (2       | .0) | (6       | .5) | (3         | .3) |             | -   | (0     | .1) | (11       
|Non-Cash activity (a) |  |    | -   |          | -   | (1       | .5) | (1         | .4) | (5          | .1) | (1     | .4) | (9        
|                     
|Balance at 7/2/04     |  | $  | -   | $     9  | .7  | $     2  | .9  | $     47   | .8  | $           | -   | $    2 | .7  | $       63
|                     

Note (a): Non-Cash activity includes
reversals of previously recorded reserves, effect of currency translation on balances, and
other changes in the reserve balance that do not flow through the income statement.

The following discussion relates to
accrual and reserve adjustments for activities initiated in prior periods. There were no
new restructuring plans implemented during the first half of 2004.

Inventory adjustments and
excess purchase commitments accrual

In the first quarter of 2004, we accrued
$2.3 million for the revaluation of inventories related to international manufacturing
outsourcing. There was also a $12.0 million reduction to the reserve for excess purchase
commitments due to a favorable settlement with a vendor.

Severance and related
expenses

In the second quarter of 2004, we
recorded a $0.3 million net reduction of reserves for severance and related costs
pertaining to certain restructuring activities that were initiated in 2003 and prior
periods. The net change to the reserves, which included both additional accruals for some
restructuring plans and reductions of reserves for others, was primarily attributable to
changes in our estimates of the amount of severance benefits that would be paid to each
employee and the number of employees that would be terminated and receive severance
payments.

In addition to the second-quarter net
reserve reduction discussed above, during the year-to-date period we recorded additional
accruals for severance and related costs of $4.1 million attributable to a change in our
estimate of the number of employees to be terminated under our fourth-quarter 2003
restructuring plan and to severance and related costs pertaining to the closure of our
Montreal, Canada facility in the fourth quarter of 2003.

8

---

Consolidation of excess
leased facilities

In the second quarter of 2004, we
accrued $0.3 million for costs associated with excess leased facilities. There was also a
$1.9 million reduction in accruals for excess facilities reserves.

In the first six months of 2004, we
accrued $1.7 million for costs associated with excess leased facilities. This amount
included accruals for the Montreal research and development office, which was closed at
the end of the first quarter of 2004. There was also a reduction of $1.9 million for
excess facilities accruals relating to final reconciliation and settlement of obligations
associated with previously vacated facilities.

Disposal of property,
plant and equipment

During the second quarter of 2004, we
recorded impairment charges of $5.1 million for property, plant and equipment to be
disposed of or held for sale. This included a $4.5 million charge for the loss on the sale
of our Bolingbrook manufacturing facilities which closed in the third quarter. In
addition, we recorded $0.6 million in impairment charges primarily relating to property,
plant and equipment used in our Montreal research and development facility. We also
received $0.7 million in proceeds from the sale of property, plant and equipment in excess
of our original estimate.

During the first half of 2004, we
recorded impairment charges of $18.0 million for property, plant and equipment to be
disposed of or held for sale. This charge was approximately $11 million more than we
anticipated at the end of fiscal 2003. Of the charge, $4.5 million represents a loss on
the sale of the Bolingbrook manufacturing facilities. Charges related to the closure of
the Montreal research and development facility at the end of the first quarter of 2004
amounted to $7.7 million, as most of the assets in the office will not be redeployed
within the company as originally anticipated, $5.5 million was recorded for U.S. research
and development and manufacturing assets, and $0.3 million was recorded for fixed assets
sold to Elcoteq as part of the international manufacturing outsourcing activity. We also
received $5.0 million in proceeds from the sale of property, plant and equipment in excess
of our original estimate of restructuring and other charges.

Other obligations

During the first half of 2004, we
accrued $2.4 million related to contract termination costs for not meeting minimum-usage
fees required under contracts due to workforce reductions. In addition, we accrued $1.4
million in wage transition charges for our international manufacturing outsourcing
activities, $0.2 million of which were accrued during the first quarter.

Of the remaining $63.1 million
reserves as of July 2, 2004, $25.8 million was classified as current because it is
expected to be paid within the next 12 months. The long-term balance of $37.3 million will
be paid over the remaining terms of the excess facility leases, which expire at various
times through 2011.

# 5. Stock Options

We account for our stock-based
compensation plans under Accounting Principles Board (APB) Opinion No. 25. Had
compensation cost for our stock-based compensation plans been determined using the fair
value at the grant dates for awards under those plans consistent with the method required
by SFAS No. 123, our net earnings/(loss) and net earnings/(loss) per share would have been
as follows:

|                                                                                                                                          |  | Three Months Ended | Six Months Ended
|----------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------ | ----------------
|                                                                                                                                         
|
|                                                                                                                                         
|Net earnings/(loss), as reported                                                                                                          |  | $   49             | .6              
|                                                                                                                                          |  |                    |                 
|Add: stock-based employee compensation expense included in
reported net earnings, net of related tax effects                              |  | 2                  | .1              
|                                                                                                                                          |  |                    |                 
|Less: total stock-based employee
compensation expense determined under fair value based method for all awards, net of related tax effects |  | (9                 | .8)             
|                                                                                                                                         
|                                                                                                                                          |  |                    |                 
|Pro forma net earnings/(loss)                                                                                                             |  | $        41        | .9              
|                                                                                                                                         
|                                                                                                                                          |  |                    |                 
|Net earnings/(loss) per share - Basic:                                                                                                    |  |                    |                 
|As reported                                                                                                                               |  | $        0         | .12             
|                                                                                                                                         
|Pro forma                                                                                                                                 |  | $        0         | .10             
|                                                                                                                                         
|                                                                                                                                          |  |                    |                 
|Net earnings/(loss) per share - Diluted:                                                                                                  |  |                    |                 
|As reported                                                                                                                               |  | $        0         | .12             
|                                                                                                                                         
|Pro forma                                                                                                                                 |  | $        0         | .10             
|                                                                                                                                         

9

---

The fair value of options was estimated on the date
 of grant using the Black-Scholes option pricing model with the following weighted-average assumptions
 for grants in 2004 and 2003:

|                        | 2004 | 2003
|----------------------- | ---- | ----
|                       
|Expected volatility     |      | 71  
|Risk-free interest rate |      | 3   
|Expected life           |      | 4.9 
|Expected dividend yield |      | 0   

The pro forma amounts disclosed above may not be representative
 of future disclosures because the estimated fair value of stock options is amortized to expense over
 the vesting period, and additional options may be granted in future years. In addition, the Black-Scholes
 option pricing model was developed for use in estimating the fair value of traded options that have
 no vesting restrictions and are fully transferable. The Black-Scholes model requires the use of assumptions that are subjective,
 such as the expected volatility of the exercise price and the expected life of the option.
 Since our options have significantly different characteristics from traded options, and since the changes
 in the subjective input assumptions can result in materially different fair value estimates, in our
 opinion, the existing option pricing models do not necessarily provide a reliable single measure of
 the fair value of the options and do not give a meaningful comparison of companies in a given industry.

# 6. Retiree Medical Plan

The following table sets forth the components of the
 net periodic benefit costs for our retiree medical plan:

|                                   |  | Three Months Ended | Six Months Ended
|---------------------------------- |  | ------------------ | ----------------
|                                  
|
|                                  
|Service cost                       |  | $    0             | .2              
|Interest cost                      |  | 0                  | .1              
|Expected return on plan assets     |  | (0                 | .1)             
|Amortization of prior service cost |  |                    | -               
|Amortization of net (gain)/loss    |  |                    | -               
|                                  
|Net periodic benefit cost          |  | $    0             | .2              
|                                  

At January 2, 2004, we estimated that we would contribute
 $1.6 million to our retiree medical plan in 2004. As of July 2, 2004, we have not contributed to the
 plan in 2004. We anticipate making a contribution to the plan in the third quarter of 2004.

# 7. Comprehensive Income/(Loss)

Comprehensive income/(loss) is an expression of our
 net earnings/(loss) in the condensed consolidated statements of operations, adjusted for foreign currency
translation adjustments and net unrealized gains or losses on available-for-sale securities. The comprehensive
income/(losses) were as follows:

10

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|                                                            |  | Three Months Ended | Six Months Ended
|----------------------------------------------------------- |  | ------------------ | ----------------
|                                                           
|
|                                                           
|Net earnings/(loss)                                         |  | $   49             | .6              
|Other comprehensive income/(loss):                          | 
|Cumulative translation adjustment                           |  | (1                 | .4)             
|Unrealized net gain/(loss) on available-for-sale securities |  | (9                 | .2)             
|                                                           
|Comprehensive income/(loss)                                 |  | $   39             | .0              
|                                                           

# 8. Product Warranties

We offer warranties for all of our products. The specific
 terms and conditions of those warranties vary depending upon the product sold. We provide a basic limited
 warranty, including parts and labor, for all products for periods of up to five years. Factors that enter
 into our estimate of our warranty reserve include the number of units shipped, historical and anticipated
 rates of warranty claims, and cost per claim. The following table presents the changes in our product
 warranty reserve:

|                                                              |  | Three Months Ended | Six Months Ended
|------------------------------------------------------------- |  | ------------------ | ----------------
|                                                             
|
|                                                             
|Total product warranty reserve at the beginning of the period |  | $     18           | .9              
|Accruals for product warranties issued                        |  | 2                  | .2              
|Settlements made during the period                            |  | (2                 | .3)             
|                                                             
|Total product warranty reserve at the end of the period       |  | $     18           | .8              
|                                                             

# 9. Income Taxes

We have recorded significant deferred
tax assets resulting from the carry-forward of tax deductions, operating losses, and tax
credits. SFAS No. 109, Accounting for Income Taxes, requires that deferred tax
assets be reduced by a valuation allowance when sufficient evidence exists that it is more
likely than not that all or a portion of such deferred tax assets will not be realized
through the generation of income in future periods. Under SFAS No. 109, our pre-tax losses
in 2003 and 2002 represent such sufficient evidence to require us to record a valuation
allowance against our U.S. and certain non-U.S. deferred tax assets. This valuation
allowance totaled $231.3 million at the end of the second quarter of 2004. We expect to
continue to record a full valuation allowance against our U.S. and certain non-U.S.
deferred tax assets until a sufficient history of profitability  as determined under
the rules of SFAS No. 109  is attained to permit recognition of deferred tax assets
without a valuation allowance. We cannot predict with an acceptable level of confidence
when we might attain a sufficient history of profitability. However, we do not expect it
will be attained in 2004. Pre-tax income generated in future periods will generally result
in a tax benefit being recognized from the utilization of our deferred tax assets and the
reversal of our valuation allowance. However, our ability to record a tax benefit upon the
reversal of our valuation allowance could be significantly impacted by the pending
acquisition of AFC. See further discussion of this transaction in our Form S-4 filed with
the Securities and Exchange Commission on June 23, 2004.

11

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Item 2. Managements
Discussion and Analysis of Financial Condition and Results of Operations
(In millions of dollars except for percentages and per share amounts)

# Acquisition

In May 2004, we entered into a
definitive merger agreement under which we will acquire Advanced Fibre Communications,
Inc. (AFC), a leader in access products. AFCs products allow carriers to
provide voice, video and high-speed internet access over a single network infrastructure.
Under the terms of the merger agreement, which was approved by both companies boards
of directors, AFC stockholders will receive 1.55 shares of Tellabs common stock and $7.00
in cash for each AFC share. Based on Tellabs closing stock price of $9.19 per share
on May 19, 2004, the last trading date prior to the public announcement of the merger,
this represents approximately $21.24 in value per AFC share, or a total value of
approximately $1.9 billion. An estimated 136.3 million common shares of Tellabs stock will
be issued for the acquisition, with the cash portion financed with cash on hand, including
AFCs cash. Upon completion of the transaction, Tellabs stockholders will own
approximately 75% of the company and AFC stockholders will own approximately 25%. This
transaction is currently expected to close during the fourth quarter of 2004, subject to
satisfaction of various closing conditions including approval by the stockholders of
Tellabs and AFC. The merger has been approved by the Federal Trade Commission.

Following AFCs announcement of
its second quarter results and outlook for the balance of 2004, the Tellabs Board of
Directors requested that Tellabs management conduct a further review and analysis of
AFCs business and financial outlook and provide the Board with an update. Management
is in the process of conducting such review in coordination with AFC.

See further discussion of this
transaction in our Form S-4 filed with the Securities and Exchange Commission on June 23,
2004.

# Introduction and
Overview of Business

Tellabs designs, develops, deploys
and supports solutions in telecom networks in more than 100 countries. More than
two-thirds of telephone calls and Internet sessions in several countries, including the
United States, flow through our equipment. Our product portfolio provides solutions in
next-generation transport, managed access, broadband data, voice quality enhancement and
cable telephony. Tellabs strategies focus on maximizing revenue in our core
businesses  Transport, Managed Access, and Voice Quality Enhancement; generating
additional revenue by setting the standard in carrier-class data; and expanding into
adjacent markets.

We generate revenue principally
through the sale of hardware and software, both as stand-alone products and as elements of
integrated systems, to many of the worlds largest and strongest carriers. In
addition, we generate revenue by providing installation and professional services related
primarily to our own products and systems.

Within North America the majority of
our revenue is derived from transport products, principally digital cross-connect systems
that manage and route network traffic, and combine, consolidate and segregate signals to
maximize efficiency. Demand for these products is sensitive to end-user demand for
bandwidth, industry capacity utilization and competing technologies.

Outside North America the majority of
our revenue arises from managed access and transport systems that control the flow of
voice, data and video across communications networks. Demand comes primarily from two
sources: Business services for voice and high speed data and demand from wireless
providers for network transport services. Demand for these products, as in North America,
is sensitive to end-user demand for bandwidth, industry capacity utilization and competing
technologies.

Services and Solutions revenue comes
from two primary sources: network construction and professional services such as network
deployment, traffic management, support services and training. Network construction
revenue, which comprises over half of all revenue from Services and Solutions, primarily
arises from sales of our transport products in North America. As a result, it has tended
to increase or decrease in similar proportion to the increase or decrease in revenue from
those products. However, the historical relationship between our network construction
revenue and product revenue has been changing as a result of changes in product mix. For
example, Tellabs® 5500 new product systems sales and electrical port bay sales, which
require more installation time than individual port cards and optical port bays, have
become a smaller percentage of product revenue. We expect this trend to continue into the
foreseeable future.

Following years of unprecedented
growth, the demand for telecommunications equipment began to decline precipitously in
early 2001 as a result of changing market conditions, industry overcapacity, an
unfavorable regulatory environment, and excessive debt loads among many carriers. As a
consequence, we experienced a 71% revenue decline over the period 2001 to 2003, and we
incurred a net loss in each of those years. As market conditions deteriorated, we
responded with a series of restructuring plans designed to match our manufacturing
capacity and expenses with demand in order to restore profitability and renew growth. We
closed manufacturing facilities in Ireland and Texas in 2001 and facilities in Ireland and
New York in 2002. We reduced headcount by 65% from 8,900 during 2001 to 3,100 at the end
of the second quarter of 2004. We exited a significant portion of the office space that we
leased and owned in the United States, and we consolidated the majority of our workforce
into our headquarters facility in Naperville, Illinois. We also reviewed our product
portfolio and cut-back or stopped development efforts on some products.

12

---

In the second half of 2003, we
committed to outsource the majority of our remaining manufacturing activities to take
advantage of the purchasing power and lower labor rates of contract manufacturers. As a
result, our remaining North American manufacturing operations, located in Illinois, ceased
at the end of October 2003, and our remaining international manufacturing operations
located in Finland, were transferred to an outsourcer at the beginning of January 2004.

As a result of these events, we
recorded restructuring charges for severance costs, facilities shutdown costs and other
obligations. Also, the decline in product demand over the recent three-year period had a
significant impact on the value of our inventory, resulting in the need to record reserves
for excess and obsolete inventory and excess purchase commitments. We also recorded
reserves for other impaired and surplus assets. These charges were significant in amount
and we encourage readers to refer to our Annual Report on Form 10-K for the year ended
January 2, 2004, for further details.

Fiscal 2004 has been a period of
strengthening demand and reduced restructuring charges, which together with the benefits
from our outsourcing efforts, resulted in a year-over-year increase in revenues and
back-to-back quarters of net earnings. Our revenue increased due to strengthening demand
from our wireless customers in North America as they build out their infrastructure in
response to increasing demand from end-users. Prior restructuring and outsourcing
activities have largely been completed.

# RESULTS OF OPERATIONS

During the second quarter, we saw a
continuation of our first quarter momentum which led to higher second-quarter and
year-to-date net earnings compared to the same periods in 2003. This increase in net
earnings for both the quarter and year-to-date period was due to higher revenue, improved
margins and lower operating expenses. We also increased our cash, cash equivalents and
investments in marketable securities by $61.4 million during the quarter and $118.6
million year-to-date.

# Revenue

The following is a comparison of
product-group revenue by quarter and year-to-date periods ended July 2, 2004, and June 27,
2003:

|                          | Periods Ended | Periods Ended
|------------------------- | ------------- | -------------
|
|                         
|
|                         
|Transport                 |               | $    161     
|Managed Access            |               | 76           
|Broadband Data            |               | 1            
|Voice Quality Enhancement |               | 24           
|Services and Solutions    |               | 40           
|                         
|Total                     |               | $    304     
|                         
|                          |               |              
|                         
|                          |              

During the quarter, we continued to
experience strong demand from our wireless customers in North America as they build out
their infrastructure in response to increasing demand from end-users. Wireless customers
in North America made up approximately 65% of our Tellabs 5500 system revenue in the
quarter, up from approximately 38% in the year ago quarter and 53% in the first quarter of
2004. This strong demand is reflected in sales of our Transport products, particularly our
Tellabs 5500 systems, which increased 85% over the year-ago quarter and year-to-date
increased 63% over last year. Sales to wireless carriers, both in North America and
International, also drove the growth in sales of our voice-quality enhancement products.

Revenue from Managed Access products
decreased $8.3 million and $12.4 million in the second quarter and first half of 2004,
respectively, compared with the same periods in 2003. The decrease in revenue from these
products was primarily due to lower sales of circuit-switched cable telephony products in
North America.

Revenue from Broadband Data products
 Tellabs® 8800 systems  was $1.8 million and $5.7 million in the second
quarter and first half of 2004. These products were acquired in our purchase of Vivace
Networks, Inc. in June of 2003.

13

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Revenue from Services and Solutions
increased $1.7 million and decreased $2.3 million in the second quarter and first half of
2004, respectively, compared with the same periods in 2003.

# Gross Profit

Gross profit improved in both the
quarter and year-to-date periods compared to 2003. The increase was primarily due to a
decrease in charges for excess and obsolete inventories and excess purchase commitments
(charges were $54.3 million in the second quarter and year-to-date periods of 2003, $5.7
million in the second quarter of 2004 and a credit of $3.5 million year-to-date in 2004);
the benefits of outsourcing our manufacturing operations; and cost control in our supply
chain management, and a more favorable product mix.

# Operating Expenses

Total operating expenses decreased
$41.7 million and $46.0 million in the second quarter and first half of 2004,
respectively, compared with the same periods in 2003. The decrease was primarily due to a
decline in restructuring and other charges of $28.1 million and $11.9 million for the
second quarter and first half of 2004, respectively, compared to the same periods of 2003;
reduced expenses due to prior restructuring activities (including headcount reductions);
and continued focus on cost control.

# Other Income/Expense

Interest income decreased $2.8
million and $5.5 million in the second quarter and first half of 2004, respectively,
compared with the same periods in 2003, as the impact of lower prevailing interest rates
offset higher levels of cash and cash equivalents and marketable securities during the
second quarter and first half of 2004.

# Effective Tax Rate

The effective tax rate for both the
second quarter and first half of 2004 was 17%, compared with a minimal provision and
benefit in the comparable periods of 2003. The increase in the tax rate for the second
quarter and first half of 2004 reflected a tax benefit from the utilization of domestic
net operating loss carry-forwards and an increase in the tax provision from our
international operations. The second-quarter tax provision also includes a $4.8 million
charge related to the disallowance of tax deductions claimed in prior years.

The tax rate for the second quarter
and first half of 2003 reflected the absence of a tax benefit for operating losses
incurred primarily in the United States and a small tax benefit from our international
operations.

# Financial Condition,
Liquidity and Capital Resources

Our principal source of liquidity
remained our cash and cash equivalents and investments in marketable securities, which
increased by $118.6 million since the end of 2003. The increase was primarily due to cash
generated by operating activities.

We believe that the current level of
working capital, particularly cash and short-term investments, is sufficient to meet our
normal operating requirements for the foreseeable future. Further, we believe that
sufficient resources exist to support our future growth and strategic needs, including the
AFC acquisition. Future sources of working capital may be from cash-on-hand, cash
generated from future operations, short-term or long-term financing, equity offerings or
any combination of these sources.

Our current policy is to retain our
earnings to provide funds for operating and expanding our business. We do not anticipate
paying a cash dividend in the foreseeable future.

# Off-Balance Sheet
Arrangements

None.

# Critical Accounting
Policies

There were no changes to our critical
accounting policies during the quarter.

# Outlook

We expect wireless demand to drive
growth in our core products for the foreseeable future. We expect third-quarter revenue to
be up over the third quarter of 2003 in the range of 20-25%; gross margins to be in the
mid to high 50% range with variability attributable to changes in product mix; and
operating expenses to be flat or slightly down from this quarters amount.

14

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# Forward-Looking
Statements

This Managements Discussion and
Analysis and other sections of this Form 10-Q contain forward-looking statements made
pursuant to the safe harbor provisions of Section 27A of the Securities Act of 1933, as
amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These
statements reflect managements expectations, estimates and assumptions, based on the
information available at the time the document was prepared. These forward-looking
statements include, but are not limited to, statements regarding future events, plans,
goals, objectives and expectations. The words anticipate, believe,
estimate, target, expect, predict,
plan, possible, intend, likely,
will, would, should, could,
may and similar expressions are intended to identify forward-looking
statements. Forward-looking statements are not guarantees of future performance and
involve risks, uncertainties and other factors that may cause our actual performance or
achievements to be materially different from any future results, performance or
achievements expressed or implied by those statements. Important factors that could cause
our actual results to differ materially from those in forward-looking statements include,
but are not limited to: economic changes impacting the telecommunications industry;
financial condition of telecommunication service providers and equipment vendors,
including any impact of bankruptcies; the impact of customer and vendor consolidation; new
product acceptance; product and end user demand, and industry capacity; competitive
products and pricing; competitive pressures from new entrants to the telecommunications
industry; research and new product development; protection and access to intellectual
property, patents and technology; ability to attract and retain highly qualified
personnel; availability of components and critical manufacturing equipment and capacity;
foreign economic conditions, including currency rate fluctuations; the regulatory and
trade environment; availability and terms of future acquisitions; uncertainties relating
to synergies, charges, and expenses associated with business combinations and other
transactions and restructurings; the ability to successfully integrate new businesses and
technologies, and other risks and future factors that may be detailed from time to time in
our filings with the SEC. For a further description of such risks and future factors, see
Exhibit 99.3 to Form 10-Q for the quarterly period ended March 28, 2003 filed with the SEC
on May 9, 2003. Our actual future results could differ materially from those predicted in
such forward-looking statements. In light of the foregoing risks, uncertainties and other
factors, investors should not place undue reliance on the forward-looking statements in
determining whether to buy, sell or hold any of our securities. We undertake no obligation
to publicly update or revise any forward-looking statements to reflect changed
assumptions, the occurrence of anticipated or unanticipated events or changes to future
results over time.

# Item 3. Quantitative and
Qualitative Disclosures About Market Risk

There were no material changes to the
disclosures on this matter made in our Annual Report on Form 10-K for the year ended
January 2, 2004.

# Item 4. Controls and
Procedures

Our management, under the supervision
and with the participation of our Chief Executive Officer and Chief Financial Officer, has
evaluated the effectiveness of our disclosure controls and procedures as of July 2, 2004.
Based upon that evaluation, our Chief Executive Officer and Chief Financial Officer have
concluded that our disclosure controls and procedures were effective. There have been no
significant changes during the period covered by this Form 10-Q in our internal control
over financial reporting that have materially affected, or are reasonably likely to
materially affect, our internal control over financial reporting.

# PART II. OTHER
INFORMATION

# Item 1. Legal Proceedings

On June 18, 2002, a class action
complaint was filed in the United States District Court of the Northern District of
Illinois against Tellabs, Michael Birck, and Richard Notebaert (former CEO, President and
Director of Tellabs). Thereafter, eight similar complaints were also filed in the United
States District Court of the Northern District of Illinois. All nine of these actions were
subsequently consolidated, and on December 3, 2002, a consolidated amended class action
complaint was filed against Tellabs, Mr. Birck, Mr. Notebaert, and certain other of our
current or former officers and/or directors. The consolidated amended complaint alleged
that during the class period (December 11, 2000-June 19, 2001) the defendants violated the
federal securities laws by making materially false and misleading statements, including,
among other things, allegedly: providing revenue forecasts that were false and misleading,
misrepresenting demand for our products, and reporting overstated revenues for the fourth
quarter 2000 in our financial statements. Further, certain of the individual defendants
were alleged to have violated the federal securities laws by trading our securities while
allegedly in possession of material, non-public information about us pertaining to these
matters.

15

---

On January 17, 2003, Tellabs and the
other named defendants filed a motion to dismiss the consolidated amended class action
complaint in its entirety. On May 19, 2003, the Court granted our motion and dismissed all
counts of the consolidated amended complaint, while affording plaintiffs an opportunity to
replead. On July 11, 2003, plaintiffs filed a second consolidated amended class action
complaint against Tellabs, Messrs. Birck and Notebaert, and many (although not all) of the
other previously named individual defendants, realleging claims similar to those contained
in the previously dismissed consolidated amended class action complaint. We filed a second
motion to dismiss on August 22, 2003, seeking the dismissal with prejudice of all claims
alleged in the second consolidated amended class action complaint. On February 19, 2004,
the Court issued an order granting that motion and dismissed the action with prejudice. On
March 18, 2004, the plaintiffs filed a Notice of Appeal to the United States Federal Court
of Appeal for the Seventh Circuit appealing the dismissal.

On June 1, 2004, a complaint was
filed on behalf of a putative class of AFC stockholders against AFC, certain of its
current officers and directors (Individual Defendants), and Tellabs, in the
Court of Chancery in the State of Delaware in and for New Castle County. The complaint
alleges that the Individual Defendants breached their fiduciary duties to AFCs
public stockholders by acting to cause or facilitate the merger of Tellabs and AFC for
inadequate consideration, and that Tellabs acted to aid and abet the alleged breaches of
fiduciary duty. In particular, plaintiff alleges that the merger consideration for
AFCs public stockholders is unfair and inadequate because, according to the
plaintiff, (a) the intrinsic value of the stock of AFC is materially in excess
of the $21.24 per share being proposed, giving due consideration to the possibilities of
growth and profitability of AFC in light of its business, earnings and earnings power,
present and future; (b) the $21.24 per share price is inadequate and offers an
inadequate premium to the public shareholders of AFC; and (c) the $21.24 per share
price is not the result of any structure[d] auction process by which AFC sought to obtain
the best deal possible for its shareholders. The plaintiff seeks to enjoin the
merger, and if the merger is consummated, to rescind the transaction, and also asserts
claims for unspecified compensatory and/or rescissory damages, and an award of costs,
including attorneys fees. Tellabs believes that the claims against it are without
merit and intends to vigorously defend itself in this action.

# Item 2.  Changes in Securities,
Use of Proceeds and Issuer Purchases of Equity Securities

None.

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

Information responsive to this item
regarding our annual meeting of stockholders was included in our quarterly report on Form
10-Q for the period ended April 2, 2004.

16

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# Item 6. Exhibits and Reports on Form 8-K

# (A) Exhibits

|   |   
|-- | --
|11 |   
|31 | .1
|31 | .2
|32 | .1
|32 | .2

# (B) Reports on Form 8-K:

Form 8-K filed on May 20, 2004,
announcing our intention to merge with Advanced Fibre Communications, Inc.

Form 8-K filed on July 13, 2004, announcing the resignation of Tellabs Senior Executive Vice
President-Global Business Operations.

Form 8-K filed on July 21, 2004,
announcing our earnings for the quarter ended July 2, 2004.

Form 8-K filed on July 22,
2004, announcing a change in benefit plan auditors.

17

---

# 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.

TELLABS, INC.(Registrant)

| |                                                           
| | ----------------------------------------------------------
| | /s/ James A. Dite                                         
| | James A. Dite                                             
| | Vice President and Controller                             
| | (Principal Accounting Officer and duly authorized
officer)
| |                                                           
| | August 10, 2004                                           
| | (Date)                                                    

18

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# EXHIBIT INDEX

|Exhibit | Description
|------- | -----------
|       
|11      |            
|31      | .1         
|31      | .2         
|32      | .1         
|32      | .2         

19

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