Document:

EXHIBIT 10.27

                    REVOLVING CREDIT AND SECURITY AGREEMENT

                                    between

                            DIGITAL LIGHTWAVE, INC.

                                  "Borrower"

                                      and

                      WACHOVIA BANK, NATIONAL ASSOCIATION

                                    "Bank"

                        Dated:  as of April 15, 2002

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                    REVOLVING CREDIT AND SECURITY AGREEMENT

      This is a Revolving Credit and Security Agreement (the "Agreement"),
dated as of April 15, 2002, between DIGITAL LIGHTWAVE, INC., a Delaware
corporation ("Borrower"), and WACHOVIA BANK, NATIONAL ASSOCIATION, a national
banking association ("Bank").

                             W I T N E S S E T H :

In consideration of the premises and of the mutual covenants herein contained
and to induce Bank to extend credit to Borrower, the parties agree as follows:

1.    DEFINITIONS.   Capitalized terms that are not otherwise defined herein
shall have the meanings set forth in Exhibit 1 hereto.

2.    THE LOAN.

      2.1   Revolving Loan.   Bank agrees, on the terms and conditions set
forth in this Agreement, to make Advances and to issue letters of credit to
Borrower from time to time during the Revolving Credit Period in amounts such
that the aggregate principal amount of Advances and the face amount of any
letters of credit at any one time outstanding will not exceed the lesser of (i)
the Maximum Loan Amount, and (ii) the Borrowing Base (the "Loan").  Within the
foregoing limit, Borrower may borrow, prepay and reborrow Advances at any time
during the Revolving Credit Period.

      2.2   Revolving Note.   The Loan shall be evidenced by a promissory note
in the face amount of the Maximum Loan Amount dated on or about the date hereof
(the "Note") and shall be payable in accordance with the terms of the Note and
this Agreement.

      2.3   Cash Management Services.   If Borrower subscribes to Bank's cash
management services and such services are applicable to the Loan, the terms of
such services, as set forth in an agreement with Bank, shall control the manner
in which funds are transferred between the Demand Deposit Account and the Loan
for credit or debit to the Loan.

      2.4   Advances.   Bank, in its discretion, may require from Borrower a
signed written request for an Advance in form satisfactory to Bank, which
request shall be delivered to Bank no later than 12:00 noon (local time in
Tampa, Florida) on the date of the requested Advance, and shall set forth the
calculation of the Borrowing Base and reconciliation to the previous request or
Borrowing Base Certificate, and shall specify the date (which shall be a
Business Day) and the amount of the proposed Advance and provide such other
information as Bank may require.  Bank's acceptance of such a request shall be
indicated by its making the Advance requested.  Such an Advance shall be made
available to Borrower in immediately available funds at Bank's address referred
to in Section 10.4.

      2.5   Repayment of Loan.

            (a)   Interest on the Loan shall accrue and be payable as set forth
in the Note.  The Loan shall mature, and the principal amount thereof and all
accrued and unpaid interest, fees, expenses and other amounts payable under the
Loan Documents shall be due and payable, on the Termination Date.

            (b)   Bank may debit the Demand Deposit Account and/or make
Advances to Borrower (whether or not in excess of the lesser of the Maximum
Loan Amount and the Borrowing Base) and apply such amounts to the payment of
interest, fees, expenses and other amounts to which Bank may be entitled from
time to time and Bank is hereby irrevocably authorized to do so without the
consent of Borrower.

            (c)   Borrower shall make each payment of principal of and interest
on the Loan and fees hereunder not later than 12:00 noon (local time Tampa,
Florida) on the date when due, without set off, counterclaim or other
deduction, in immediately available funds to Bank at its address referred to in
Section 10.4.  Whenever any payment of principal of, or interest on, the Loan
or of fees shall be due on a day which is not a Business Day, the date for
payment thereof shall be extended to the next succeeding Business Day.  If the
date for any payment of principal is extended by operation of law or otherwise,
interest thereon shall be payable for such extended time.

            (d)   To the extent that the aggregate amount of all Advances and
the face amount of all outstanding letters of credit exceeds the Maximum Loan
Amount, the amount of such excess will be paid immediately to Bank upon Bank's
demand.

      2.6   Overdue Amounts.  Any payments not made as and when due shall bear
interest from the date due until paid at the Default Rate, in Bank's
discretion.

      2.7   Calculation of Interest.    All interest under the Note or
hereunder shall be calculated on the basis of a year of 360 days and actual
days elapsed, as provided in the Note.  Interest shall accrue on the unpaid
principal amount of each Advance from the date such Advance is made available
to Borrower at the 1 Month LIBOR Market Index Rate, as defined in the Note,
plus 0.70%.

      2.8   Letters of Credit.

            (a)   At its discretion Bank may from time to time issue, extend or
renew letters of credit for the account of Borrower or its Subsidiaries.  The
availability of Advances under the Loan shall be reduced by outstanding
obligations of Bank under any letters of credit.  All payments made by Bank
under any such letters of credit (whether or not Borrower is the account party
or drawer) and all fees, commissions, discounts and other amounts owed or to be
owed to Bank in connection therewith, shall be deemed to be Advances under the
Note,  and shall be repaid as provided in the Note.  Borrower shall complete
and sign such applications and supplemental agreements and provide such other
documentation as Bank may require.  The form and substance of all letters of
credit, including expiration dates, shall be subject to Bank's approval.   Bank
may charge a fee or commission, consistent with the fees or commissions charged
by Bank in similar transactions, for issuance, renewal or extension of a letter
of credit.  Borrower unconditionally guarantees all obligations of any
Subsidiary with respect to letters of credit issued by Bank for the account of
such Subsidiary.  Upon an Event of Default, Borrower shall, on demand, deliver
to Bank good funds equal to 105% of Bank's maximum liability under all
outstanding letters of credit, to be held as cash collateral for Borrower's
reimbursement obligations and other Indebtedness.

            (b)   Any letter of credit issued hereunder shall be governed by
the Uniform Customs of Practice for Documentary Credit (1993 Rev.),
International Chamber of Commerce Publication No. 500, as revised from time to
time, except to the extent that the terms of such publication would limit or
diminish rights granted to Bank hereunder or in any other Loan Document.

      2.9   Fees.

            (a)   On the date of this Agreement, Borrower shall pay to Bank a
non-refundable facility fee in the amount of $27,500.00, equal to 0.10% of the
Maximum Loan Amount.

            (b)   On the 15th day of each January, April, July and October
until the Loan is paid in full and Borrower has no further right to receive
Advances, Borrower shall pay to Bank an availability fee for the immediately
preceding three months at a rate of 0.10% per annum on the Average Available
Principal Balance for such three months.

      2.10  Statement of Account.  If Bank provides Borrower with a statement
of account on a periodic basis, such statement will be presumed complete and
accurate, except as to any manifest error by Bank in the computation of amounts
paid by Borrower, and will be definitive and binding on Borrower, unless
objected to with specificity by Borrower in writing within forty-five (45) days
after receipt.

      2.11  Termination.  Upon at least fifteen (15) days prior written notice
to Bank, Borrower may, at its option, terminate this Agreement and the Loan
facility.  Bank may terminate the Loan facility hereunder at any time, without
notice, upon or after the occurrence of an Event of Default.

      2.12  Collateral.  To secure the full and timely performance of all the
obligations of Borrower pursuant to the Loan Documents, Borrower shall, upon
execution of this Agreement, execute and deliver to Bank such agreements as are
required by Bank, granting to Bank a first priority, perfected security
interest in all the Collateral.

3.    CONDITIONS PRECEDENT TO BORROWING.   Prior to any Advance, the following
conditions shall have been satisfied, in the sole opinion of Bank and its
counsel:

      3.1   Conditions Precedent to Initial Advance.   In addition to any other
requirement set forth in this Agreement, Bank will not make the initial Advance
under the Loan unless and until the following conditions shall have been
satisfied:

            (a)   Loan Documents.   Borrower and each other party to any Loan
Document, as applicable, shall have executed and delivered this Agreement, the
Note, and other required Loan Documents, all in form and substance satisfactory
to Bank.

            (b)   Supporting Documents.   Borrower shall cause to be delivered
to Bank the following documents:

                  (i)  A copy of the governing instruments of Borrower and a
good standing certificate of Borrower, certified by the appropriate official of
its state of incorporation and the State of Florida, if different;

                  (ii) A copy of the bylaws of Borrower, certified as to
completeness and accuracy by an appropriate officer, manager or partner of
Borrower;

                  (iii)Incumbency certificate and certified resolutions of the
board of directors (or other appropriate Persons) of Borrower signed by the
Secretary or another authorized officer of Borrower, authorizing the execution,
delivery and performance of the Loan Documents;

                  (iv) UCC searches and other Lien searches showing no existing
security interests in or Liens on the Collateral;

                  (v)  The legal opinion of Borrower's legal counsel addressed
to Bank regarding such matters as Bank and its counsel may request; and

                  (vi) Satisfactory evidence of payment of all fees due and
reimbursement of all costs incurred by Bank, and evidence of payment to other
parties of all fees or costs which Borrower is required under this Agreement to
pay by the date hereof.

            (c)   Insurance.   Borrower shall have delivered to Bank
satisfactory evidence of insurance meeting the requirements of Section 5.2.

            (d)   Perfection of Liens.   UCC-1 financing statements and, if
applicable, certificates of title covering the Collateral executed by Borrower
shall duly have been recorded or filed in the manner and places required by law
to establish, preserve, protect and perfect the interests and rights created or
intended to be created hereby; and all taxes, fees and other charges in
connection with the execution, delivery and filing of this Agreement and the
financing statements shall duly have been paid.

            (e)   Additional Documents.   Borrower shall have delivered to Bank
all additional opinions, documents, certificates and other assurances that Bank
or its counsel may require.

            (f)   Payment of Fees.   Borrower shall have paid all fees, costs
and expenses as required by the Loan Documents in connection with the Closing.

      3.2   Conditions Precedent to Each Advance.   The following conditions,
in addition to any other requirements set forth in this Agreement, shall have
been met or performed by the Advance Date with respect to any Advance Request
and each Advance Request (whether or not a written Advance Request is required)
shall be deemed to be a representation that all such conditions have been
satisfied:

            (a)   Advance Request.   Borrower shall have delivered to Bank an
Advance Request and other information, as required under Section 2.4.

            (b)   No Default.   No Default shall have occurred and be
continuing or would occur upon the making of the Advance in question and, if
Borrower is required to deliver a written Advance Request, Borrower shall have
delivered to Bank an officer's certificate to such effect, which may be
incorporated in the Advance Request.

            (c)   Correctness of Representations.   All representations and
warranties made by Borrower herein or otherwise in writing in connection
herewith shall be true and correct in all material respects with the same
effect as though the representations and warranties had been made on and as of
the proposed Advance Date, and, if Borrower is required to deliver a written
Advance Request, Borrower shall have delivered to Bank an officer's certificate
to such effect, which may be incorporated in the Advance Request.

            (d)   No Adverse Change.   There shall have been no change which
could have a Material Adverse Effect on the condition, financial or otherwise,
of Borrower or any Subsidiary from such condition as it existed on the date of
the most recent financial statements of such Person delivered to Bank from time
to time.

            (e)   Limitations Not Exceeded.   The proposed Advance shall not
cause the outstanding principal balance of the Loan to exceed the lesser of (i)
the Maximum Loan Amount, or (ii) the Borrowing Base.

            (f)   [Intentionally Omitted].

            (g)   Further Assurances.   Borrower shall have delivered such
further documentation or assurances as Bank may reasonably require.

4.    REPRESENTATIONS AND WARRANTIES.    In order to induce Bank to enter into
this Agreement and to make the Loan provided for herein, Borrower makes the
following representations and warranties, all of which shall survive the
execution and delivery of the Loan Documents.  Unless otherwise specified, such
representations and warranties shall be deemed made as of the date hereof and
as of the Advance Date of any Advance by Bank to Borrower:

      4.1   Valid Existence and Power.   Borrower is an entity duly organized,
validly existing and in good standing under the laws of the jurisdiction of its
organization and is duly qualified or licensed to transact business in all
places where the failure to be so qualified would have a Material Adverse
Effect on it.  Borrower and each other Person which is a party to any Loan
Document (other than Bank) has the power to make and perform the Loan Documents
executed by it and all such instruments will constitute the legal, valid and
binding obligations of such Person, enforceable in accordance with their
respective terms, subject only to bankruptcy and similar laws affecting
creditors' rights generally.

      4.2   Authority.   The execution, delivery and performance thereof by
Borrower and each other Person (other than Bank) executing any Loan Document
have been duly authorized by all necessary action of such Person, and do not
and will not violate any provision of law or regulation, or any writ, order or
decree of any court or governmental or regulatory authority or agency or any
provision of the governing instruments of such Person, and do not and will not,
with the passage of time or the giving of notice, result in a breach of, or
constitute a default or require any consent under, or result in the creation of
any Lien upon any property or assets of such Person pursuant to, any law,
regulation, instrument or agreement to which any such Person is a party or by
which any such Person or its respective properties may be subject, bound or
affected.

      4.3   Financial Condition.   Other than as disclosed in financial
statements delivered to Bank on or prior to the date hereof, neither Borrower
nor any Subsidiary has any direct or contingent obligations or liabilities
(including any guarantees or leases) or any material unrealized or anticipated
losses from any commitments of such Person except as described on Exhibit 4.3
(if any).  All such financial statements have been prepared in accordance with
GAAP and fairly present the financial condition of Borrower or the Subsidiary,
as the case may be, as of the date thereof. Borrower is not aware of any
material adverse fact (other than facts which are generally available to the
public and not particular to Borrower, such as general economic or industry
trends) concerning the conditions or future prospects of Borrower or any
Subsidiary which has not been fully disclosed to Bank, including any adverse
change in the operations or financial condition of such Person since the date
of the most recent financial statements delivered to Bank. Borrower and each
Subsidiary is Solvent, and after consummation of the transactions set forth in
this Agreement and the other Loan documents, Borrower and each Subsidiary  will
be Solvent.

      4.4   Litigation.   Except as disclosed on Exhibit 4.4 (if any) or in
Borrower's most recent 10K Report, there are no suits or proceedings pending,
or to the knowledge of Borrower threatened, before any court or by or before
any governmental or regulatory authority, commission, bureau or agency or
public regulatory body against or affecting Borrower or any Subsidiary, or
their assets, which if adversely determined would have a Material Adverse
Effect on the financial condition or business of Borrower or such Subsidiary.

      4.5   Agreements, Etc. Neither Borrower nor any Subsidiary is a party to
any agreement or instrument or subject to any court order, governmental decree
or any charter or other corporate restriction, adversely affecting its
business, assets, operations or condition (financial or otherwise), nor is any
such Person in default in the performance, observance or fulfillment of any of
the obligations, covenants or conditions contained in any agreement or
instrument to which it is a party, or any law, regulation, decree, order or the
like.

      4.6   Authorizations.   All authorizations, consents, approvals and
licenses required under applicable law or regulation for the ownership or
operation of the property owned or operated by Borrower or any Subsidiary or
for the conduct of any business in which it is engaged have been duly issued
and are in full force and effect, and it is not in default, nor has any event
occurred which with the passage of time or the giving of notice, or both, would
constitute a default, under any of the terms or provisions of any part thereof,
or under any order, decree, ruling, regulation, closing agreement or other
decision or instrument of any governmental commission, bureau or other
administrative agency or public regulatory body having jurisdiction over such
Person, which default would have a material adverse effect on such Person.
Except as noted herein, no approval, consent or authorization of, or filing or
registration with, any governmental commission, bureau or other regulatory
authority or agency is required with respect to the execution, delivery or
performance of any Loan Document.

      4.7   Title. Each of Borrower and each Subsidiary has good title to all
of the assets shown in its financial statements free and clear of all Liens
except Liens on assets other than the Collateral in favor of lenders named
therein.  Borrower alone has full ownership rights in all Collateral, subject
to no Liens.

      4.8   Collateral.   The security interests granted to Bank herein and
pursuant to any other Security Agreement (a) constitute and, as to subsequently
acquired property included in the Collateral, will be fully perfected, superior
and prior to the rights of all third persons, now existing or hereafter
arising; and (b) are, and as to such subsequently acquired Collateral will be,
fully perfected, superior and prior to the rights of all third persons, now
existing or hereafter arising.  All shares of stock constituting part of the
Collateral (a) have been, to Borrower's knowledge, duly authorized and validly
issued by the respective issuers thereof, and (b) are fully paid and non-
assessable.

      4.9   Taxes.   Borrower and each Subsidiary have filed all federal and
state income and other tax returns which are required to be filed, and has paid
all taxes as shown on said returns and all taxes, including withholding, FICA
and ad valorem taxes, shown on all assessments received by it to the extent
that such taxes have become due, except to the extent (if any) described on
Exhibit 4.9, that Borrower is actively contesting the payment of any such taxes
in accordance with law. Neither Borrower nor any Subsidiary is subject to any
federal, state or local tax Liens nor has Borrower received any notice of
deficiency or other official notice to pay any taxes.  Borrower has paid all
sales and excise taxes payable by it.

      4.10  Labor Law Matters.   No goods or services have been or will be
produced by Borrower in violation of any applicable labor laws or regulations
or any collective bargaining agreement or other labor agreements or in
violation of any minimum wage, wage-and-hour or other similar laws or
regulations.

      4.11  Judgment Liens. Except as disclosed on Exhibit 4.4, neither
Borrower nor any Subsidiary, nor any of their assets, are subject to any unpaid
judgments (whether or not stayed) or any judgment liens in any jurisdiction.

      4.12  Subsidiaries.  If Borrower has any Subsidiaries, they are listed on
Exhibit 4.12.

      4.13  Environmental.   Except as disclosed on Exhibit 4.13, and except
for ordinary and customary amounts of solvents, cleaners and similar materials
used in the ordinary course of Borrower's businesses and in strict compliance
with all Environmental Laws, neither Borrower, nor to Borrower's best knowledge
any other previous owner or operator of any real property currently owned or
operated by Borrower has generated, stored or disposed of any Regulated
Material on any portion of such property, or transferred any Regulated Material
from such property to any other location in violation of any applicable
Environmental Laws.  Except as disclosed on Exhibit 4.13, no Regulated Material
has been generated, stored or disposed of on any portion of the real property
currently owned or operated by Borrower by any other Person, or is now located
on such property.  Except as disclosed on Exhibit 4.13, Borrower is in full
compliance with all applicable Environmental Laws and none of them has been
notified of any action, suit, proceeding or investigation which calls into
question compliance by Borrower with any Environmental Laws or which seeks to
suspend, revoke or terminate any license, permit or approval necessary for the
generation, handling, storage, treatment or disposal of any Regulated Material.

      4.14  ERISA.   Borrower has furnished to Bank true and complete copies of
the latest annual report required to be filed pursuant to Section 104 of the
Employee Retirement Income Security Act of 1974, as amended ("ERISA"), with
respect to each employee benefit plan or other plan maintained for employees of
Borrower or any Subsidiary and covered by Title IV of ERISA (a "Plan"), and no
Termination Event (as hereinafter defined) with respect to any Plan has
occurred and is continuing.  For the purposes of this Agreement, a "Termination
Event" shall mean a "reportable event" as defined in Section 4043(b) of ERISA,
or the filing of a notice of intent to terminate under Section 4041 of ERISA.
Neither Borrower nor any Subsidiary has any unfunded liability with respect to
any such Plan.

      4.15  Investment Company Act.   Neither Borrower nor any Subsidiary is an
"investment company" as defined in the Investment Company Act of 1940, as
amended.

      4.16  Insider.   Borrower is not, and no Person having "control" (as that
term is defined in 12 U.S.C. {section}  375(b)(5) or in regulations promulgated
pursuant thereto) of Borrower is, an "executive officer," "director," or
"principal shareholder" (as those terms are defined in 12 U.S.C. {section}
375(b) or in regulations promulgated pursuant thereto) of Bank, of a bank
holding company of which Bank is a subsidiary, or of any subsidiary of a bank
holding company of which Bank is a subsidiary.

      4.17  Compliance with Covenants; No Default.   Borrower is, and upon
funding of the Loan will be, in compliance with all of the covenants hereof.
No Default has occurred, and the execution, delivery and performance of the
Loan Documents and the funding of the Loan will not cause a Default.

      4.18  Full Disclosure.   There is no material fact which is known or
which should be known by Borrower that Borrower has not disclosed to Bank which
could have a Material Adverse Effect.  No Loan Document, nor any agreement,
document, certificate or statement delivered by Borrower to Bank, contains any
untrue statement of a material fact or omits to state any material fact which
is known or which should be known by Borrower necessary to keep the other
statements from being misleading.

      4.19  Location.   Borrower is not incorporated in any jurisdiction other
than the State of Delaware.

      4.20  Name.   Borrower conducts business only under its legal name as set
forth in the introductory section of this Agreement.  During the preceding five
(5) years Borrower has not (i) been known as or used any other corporate,
fictitious or trade name, (ii) been the surviving entity of a merger or
consolidation or (iii) acquired all or substantially all of the assets of any
Person..

      4.21  Additional Representations.   Any additional representations or
warranties set forth on Exhibit 4.21 (if any) hereto are true and correct in
all material respects.

5.    AFFIRMATIVE COVENANTS OF BORROWER.  Borrower covenants and agrees that
from the date hereof and until payment in full of the Indebtedness and the
formal termination of this Agreement, Borrower and each Subsidiary (if
applicable):

      5.1   Use of Loan Proceeds.   Shall use the proceeds of the Loan only for
short-term working capital and general corporate purposes, including business
acquisitions, and furnish Bank all evidence that it may reasonably require with
respect to such use.

      5.2   Insurance.   Shall maintain such liability insurance, workers'
compensation insurance, business interruption insurance and casualty insurance
as may be required by law, customary and usual for prudent businesses in its
industry or as may be reasonably required by Bank.

      5.3   Notice of Default.   Shall provide to Bank immediate notice of (a)
the occurrence of a Default and what action (if any) Borrower is taking to
correct the same, (b) any material litigation or material changes in existing
litigation or any judgment against it or its assets, (c) any material damage or
loss to property, (d) any notice from taxing authorities as to claimed
deficiencies or any tax lien or any notice relating to alleged ERISA
violations, (e) any Reportable Event, as defined in ERISA, (f) any offset,
dispute, loss or other circumstance having a Material Adverse Effect on any
Collateral, (g) the cancellation or termination of, or any default under, any
material agreement to which Borrower is a party or by which any of its
properties are bound, or any acceleration of the maturity of any Debt of
Borrower; and (g) any loss or threatened loss of material licenses or permits.

      5.4   Inspections.   Shall permit inspections of the Collateral and the
records of such Person pertaining thereto and verification of the Collateral at
such times and in such manner as may be reasonably required by Bank and shall
further permit such inspections, reviews and field examinations of its other
records and its properties (with such reasonable frequency and at such
reasonable times as Bank may desire) by Bank as Bank may deem necessary or
desirable from time to time.  The cost of such field examinations, reviews,
verifications and inspections shall be borne by Borrower.

      5.5   Financial Information.   Shall maintain books and records in
accordance with GAAP and shall furnish to Bank the following periodic financial
information:

            (a)   Interim Statements.   As soon as available and in any event
within forty-five (45) days after the end of each fiscal quarter of Borrower,
an unaudited management-prepared balance sheet of Borrower and its Subsidiaries
at the end of that period and an unaudited management-prepared income statement
and statement of cash flows for that period (and for the portion of the fiscal
year ending with such period), together with all supporting schedules, setting
forth in comparative form the figures for the same period of the preceding
fiscal year, and certified by the chief financial officer of Borrower as true
and correct and fairly representing the financial condition of Borrower and its
Subsidiaries and that such statements are prepared in accordance with GAAP,
except without footnotes and subject to normal year-end audit adjustments;

            (b)   Annual Statements.   As soon as available and in any event
within one hundred and twenty (120) days after the end of each fiscal year, a
detailed audited financial report of Borrower and its Subsidiaries containing a
consolidated and consolidating balance sheet at the end of that period and a
consolidated and consolidating income statement and statement of cash flows for
that period, setting forth in comparative form the figures for the preceding
fiscal year, together with all supporting schedules and footnotes, and
containing an audit opinion of independent certified public accountants
acceptable to Bank that the financial statements were prepared in accordance
with GAAP.  Borrower shall obtain such written acknowledgments from Borrower's
independent certified public accountants as Bank may require permitting Bank to
rely on such annual financial statements.  Any management letter, supplemental
letter, or other document accompanying the report will also be provided to
Bank.  In addition, promptly upon receipt, one copy of each written report
submitted to Borrower by independent accountants for any other annual,
quarterly or special audit will be provided to Bank;

            (c)   No Default Certificates.   Together with each report required
by Subsection (a) and (b), a certificate of its president or chief financial
officer that no Default then exists or if a Default exists, the nature and
duration thereof and Borrower's intention with respect thereto, and in
addition, shall cause Borrower's independent auditors (if applicable) to submit
to Bank, together with its audit report, a statement that, in the course of
such audit, it discovered no circumstances which it believes would result in a
Default or if it discovered any such circumstances, the nature and duration
thereof;

            (d)   [Intentionally Omitted].

            (e)   Auditor's Management Letters.  Promptly upon receipt thereof,
copies of each report submitted to Borrower by independent public accountants
in connection with any annual, interim or special audit made by them of the
books of Borrower including, without limitation, each report submitted to
Borrower concerning its accounting practices and systems and any final comment
letter submitted by such accountants to management in connection with the
annual audit of Borrower;

            (f)   Other Information.   Such other information reasonably
requested by Bank from time to time concerning the business, properties or
financial condition of Borrower and its Subsidiaries; and

            (g)   SEC Reports.  All filings with the Securities and Exchange
Commission or other state and federal agencies charged with regulating
securities, including but not limited to 10-Q and 10-K reports, in the same
names and timeframes required by the Securities and Exchange Commission or such
other agencies.

      5.6   Maintenance of Existence and Rights.   Shall preserve and maintain
its corporate existence, authorities to transact business, rights and
franchises, trade names, patents, trademarks and permits necessary to the
conduct of its business.

      5.7   Payment of Taxes, Etc.   Shall pay before delinquent all of its
debts and taxes, except that Bank shall not unreasonably withhold its consent
to nonpayment of taxes being actively contested in accordance with law
(provided that Bank may require bonding or other assurances).

      5.8   Subordination.   Shall cause all debt and other obligations now or
hereafter owed to any Affiliate to be subordinated in right of payment and
security to the Indebtedness in accordance with subordination agreements
satisfactory to Bank.

      5.9   Compliance; Hazardous Materials.   Shall strictly comply with all
laws, regulations, ordinances and other legal requirements, specifically
including, without limitation, ERISA, all securities laws and all laws relating
to hazardous materials and the environment.  Unless approved in writing by
Bank, neither Borrower nor any Subsidiary shall engage in the storage,
manufacture, disposition, processing, handling, use or transportation of any
hazardous or toxic materials, whether or not in compliance with applicable laws
and regulations.

      5.10  Maintenance of Collateral.   Shall take such action as is necessary
to maintain the value of the Collateral.

      5.11  Further Assurances.   Shall take such further action and provide to
Bank such further assurances as may be reasonably requested to ensure
compliance with the intent of this Agreement and the other Loan Documents.

      5.12  Covenants Regarding Collateral.   With respect to the Collateral:

            (a)    shall  use the Collateral only in the ordinary course of its
business and will not permit  the  Collateral  to  be  used in violation of any
applicable law or policy of insurance;

            (b)    as agent for Bank, shall defend the Collateral  against  all
claims and demands of all Persons;

            (c)   shall,  at  Bank's  request,  obtain and deliver to Bank such
waivers as Bank may require waiving lienholder's enforcement rights against the
Collateral  and assuring Bank's access to the Collateral  in  exercise  of  its
rights hereunder;

             (e)   shall not sell, assign, lease, transfer, pledge, hypothecate
or otherwise dispose of or encumber any Collateral or any interest therein, if,
upon the taking  of  any such action, the outstanding balance of the Loan would
exceed the Borrowing Base;

            (f)   shall  not,  except  as  otherwise provided herein, allow any
tangible Collateral to be commingled with, or  become  an  accession to or part
of,  any property of any other Person so long as such property  is  Collateral;
and

            (g)   shall deliver to Bank any certificates evidencing any part of
the Collateral, together with proper instruments of assignment duly executed in
blank by Borrower

6.    NEGATIVE COVENANTS OF BORROWER.  Borrower covenants and agrees that from
the date hereof and until payment in full of the Indebtedness and the formal
termination of this Agreement, Borrower and each Subsidiary:

      6.1   Liens.  Shall not create or permit any Liens on any of the
Collateral.

      6.2   [Intentionally Omitted].

      6.3   Transactions with Affiliates.   Shall not directly or indirectly
purchase, acquire or lease any property from, or sell, transfer or lease any
property to, pay any management fees to or otherwise deal with, in the ordinary
course of business or otherwise, any Affiliate (other than a Subsidiary);
provided, however, that any acts or transactions prohibited by this Section
(and not otherwise prohibited under this Agreement) may be performed or engaged
in after written notice to Bank if upon terms not less favorable to Borrower or
such Subsidiary than if no such relationship existed.

      6.4   No Change in Name, Offices.   Shall not, unless it shall have given
60 days' advance written notice thereof to Bank, change its name or the
location of its chief executive office or other office where books or records
are kept. Borrower's use of any trade or fictitious name shall be in compliance
with all laws regarding the use of such names.

      6.5   Margin Stock.   Shall not use any proceeds of the Loan to purchase
or carry any margin stock (within the meaning of Regulation U of the Board of
Governors of Federal Reserve System) or extend credit to others for the purpose
of purchasing or carrying any margin stock.

      6.6   [Intentionally Omitted].

      6.7   [Intentionally Omitted].

      6.8   Liquidation, Mergers, Consolidations and Dispositions of
Substantial Assets.  Shall not dissolve or liquidate, or (unless Borrower is
the surviving party thereof and remains liable for the Obligations of Borrower
under the Loan Documents) become a party to any merger or consolidation.

      6.9   Change of Fiscal Year or Accounting Methods.   Shall not change its
fiscal year or its accounting methods.

      6.10  Default on Other Contracts or Obligations. Shall not default on any
material contract with or obligation when due to a third party or default in
the performance of any obligation to a third party incurred for money borrowed.

      6.11  Aggregate Advances in Excess of Borrowing Base. Shall not permit
the amount of the Loan to exceed at any time the Borrowing Base.

7.    OTHER COVENANTS OF BORROWER.   Borrower covenants and agrees that from
the date hereof and until payment in full of the Indebtedness and the formal
termination of this Agreement, Borrower shall comply with the following
additional covenants:

      7.1   Deposit Relationship.   Borrower shall maintain its primary
depository account and cash management account with Bank.

8.    DEFAULT.

      8.1   Events of Default.   Each of the following shall constitute a
Default:

            (a)   There shall occur any default by Borrower in the payment,
when due, of any principal of or interest on the Note, any amounts due
hereunder or any other Loan Document, or any other Indebtedness; or

            (b)   There shall occur any default by Borrower or any other party
to any Loan Document (other than Bank) in the performance of any agreement,
covenant or obligation contained in this Agreement or such Loan Document not
provided for elsewhere in this Section 8; or

            (c)   Any representation or warranty made by Borrower or any other
party to any Loan Document (other than Bank) herein or therein or in any
certificate or report furnished in connection herewith or therewith shall prove
to have been untrue or incorrect in any material respect when made; or

            (d)   Any other obligation now or hereafter owed by Borrower or any
Subsidiary to Bank, including without limitation obligations under any swap
agreement entered by Borrower with Bank, shall be in default and not cured
within the grace period, if any, provided therein, or any such Person shall be
in default under any obligation in excess of $250,000.00 owed to any other
obligee, which default entitles the obligee to accelerate any such obligations
or exercise other remedies with respect thereto; or

            (e)   Borrower or any Subsidiary shall () voluntarily dissolve,
liquidate or terminate operations or apply for or consent to the appointment
of, or the taking of possession by, a receiver, custodian, trustee or
liquidator of such Person or of all or of a substantial part of its assets, ()
admit in writing its inability, or be generally unable, to pay its debts as the
debts become due, () make a general assignment for the benefit of its
creditors, () commence a voluntary case under the federal Bankruptcy Code (as
now or hereafter in effect), () file a petition seeking to take advantage of
any other law relating to bankruptcy, insolvency, reorganization, winding-up,
or composition or adjustment of debts, () fail to controvert in a timely and
appropriate manner, or acquiesce in writing to, any petition filed against it
in an involuntary case under Bankruptcy Code, or () take any corporate action
for the purpose of effecting any of the foregoing; or

            (f)   An involuntary petition or complaint shall be filed against
Borrower or any Subsidiary seeking bankruptcy relief or reorganization or the
appointment of a receiver, custodian, trustee, intervenor or liquidator of
Borrower or any Subsidiary, of all or substantially all of its assets, and such
petition or complaint shall not have been dismissed within sixty (60) days of
the filing thereof; or an order, order for relief, judgment or decree shall be
entered by any court of competent jurisdiction or other competent authority
approving or ordering any of the foregoing actions;

            (g)   A judgment in excess of $250,000.00 shall be rendered against
Borrower or any Subsidiary  and shall remain undischarged, undismissed and
unstayed for more than ten days (except judgments validly covered by insurance
with a deductible of not more than $250,000.00) or there shall occur any levy
upon, or attachment, garnishment or other seizure of, the Collateral or other
assets of Borrower or a Subsidiary, where the amount of the underlying claim
exceeds $250,000.00 or where the amount of the underlying claim, if deducted
from the market value of the Collateral included in the Borrowing Base, would
cause the principal balance of the Loan to exceed the Borrowing Base; or

            (h)   Borrower or any Subsidiary  shall fail to pay, on demand, any
returned or dishonored draft, check, or other item which has been deposited to
the Demand Deposit Account or otherwise presented to Bank and for which
Borrower has received provisional credit; or

            (i)   Intentionally deleted.

      8.2   Cure Period.   Borrower shall have five days after first receiving
notice of any Default under clauses (b), (d) or (h) above ("Cure Period") in
order to cure such Default, provided that:  (a) such Default is subject to
being cured within the Cure Period, (b) Borrower exercises due diligence during
the Cure Period to cure the Default, (c) a delay in exercising its remedies
would not, in Bank's discretion, impair the Bank's ability to protect its
interest in the Collateral, and (d) there was not a prior occurrence of the
same Default within one year prior to such Default.  Borrower shall have no
rights to cure any Default under clauses 8.1 (a), (c), (e), (f) and (g) above.

      8.3   Remedies.   If any Default shall occur, Bank may, without notice to
Borrower, at its option, withhold further Advances to Borrower. If an Event of
Default shall have occurred and be continuing, Bank may at its option take any
or all of the following actions:

            (a)    Bank  may  declare any or all Indebtedness to be immediately
due and payable (if not earlier  demanded),  terminate  its  obligation to make
Advances to Borrower, bring suit against Borrower to collect the  Indebtedness,
exercise any remedy available to Bank hereunder or at law and take  any  action
or  exercise  any remedy provided herein or in any other Loan Document or under
applicable law.   No  remedy shall be exclusive of other remedies or impair the
right of Bank to exercise any other remedies.

            (b)   Without  waiving  any  of its other rights hereunder or under
any other Loan Document, Bank shall have all  rights  and remedies of a secured
party under the Code (and the Uniform Commercial Code of  any  other applicable
jurisdiction) and such other rights and remedies as may be available hereunder,
under  other  applicable  law or pursuant to contract.  If requested  by  Bank,
Borrower will promptly assemble the Collateral and make it available to Bank at
a place to be designated by  Bank.   Borrower agrees that any notice by Bank of
the  sale  or  disposition  of the Collateral  or  any  other  intended  action
hereunder,  whether  required  by  the  Code  or  otherwise,  shall  constitute
reasonable notice to Borrower if the notice is mailed to Borrower by regular or
certified mail, postage prepaid,  at  least  five  days before the action to be
taken.  Borrower shall be liable for any deficiencies in the event the proceeds
of the disposition of the Collateral do not satisfy the Indebtedness in full.

            (c)    Bank  may  demand,  collect  and sue for  all  amounts  owed
pursuant to Accounts, General Intangibles, Chattel Paper or for proceeds of any
Collateral (either in Borrower's name or Bank's name  at  the latter's option),
with the right to enforce, compromise, settle or discharge any such amounts.

      8.4   Receiver.   In addition to any other remedy available to it, Bank
shall have the absolute right, upon the occurrence of an Event of Default, to
seek and obtain the appointment of a receiver to take possession of and operate
and/or dispose of the business and assets of Borrower and any costs and
expenses incurred by Bank in connection with such receivership shall bear
interest at the Default Rate, at Bank's option and shall be secured by all
Collateral.

      8.5   Deposits.   After the occurrence of an Event of Default, Borrower
authorizes Bank to collect and apply against the Indebtedness when due any cash
or deposit accounts in its possession, and irrevocably appoints Bank as its
attorney-in-fact to endorse any check or draft or take other action necessary
to obtain such funds.

9.    SECURITY AGREEMENT.

      9.1   Security Interest

            (a)   As security for the payment and performance of any and all of
the Indebtedness and the performance of all other obligations  and covenants of
Borrower  hereunder and under the other Loan Documents, certain or  contingent,
now existing  or  hereafter arising, which are now, or may at any time or times
hereafter be owing  by  Borrower  to  Bank, Borrower hereby pledges to Bank and
gives Bank a continuing security interest in and general Lien upon and right of
set-off  against, all right, title and interest  of  Borrower  in  and  to  the
Collateral, whether now owned or hereafter acquired by Borrower.

            (b)    Except  as  herein  or by applicable law otherwise expressly
provided,  Bank  shall not be obligated to  exercise  any  degree  of  care  in
connection with any  Collateral  in its possession, to take any steps necessary
to preserve any rights in any of the  Collateral  or  to  preserve  any  rights
therein  against prior parties, and Borrower agrees to take such steps. In  any
case Bank  shall  be  deemed to have exercised reasonable care if it shall have
taken such steps for the  care  and  preservation  of  the Collateral or rights
therein  as  Borrower  may have reasonably requested Bank to  take  and  Bank's
omission to take any action  not  requested  by  Borrower shall not be deemed a
failure to exercise reasonable care.  No segregation  or specific allocation by
Bank of specified items of Collateral against any liability  of  Borrower shall
waive  or  affect  any  security  interest  in  or Lien against other items  of
Collateral or any of Bank's options, powers or rights  under  this Agreement or
otherwise arising.

            (c)   After the occurrence of an Event of Default,  Bank may at any
time  and  from time to time, with or without notice to Borrower, (i)  transfer
into the name of Bank or the name of Bank's nominee any of the Collateral, (ii)
notify any Account  Debtor  or  other obligor of any Collateral to make payment
thereon direct to Bank of any amounts  due  or  to become due thereon and (iii)
receive and direct the disposition of any proceeds of any Collateral.

      9.2   Power of Attorney   Borrower authorizes Bank at Borrower's expense
to file any financing statements relating to the Collateral (without Borrower's
signature thereon) which Bank deems appropriate and Borrower irrevocably
appoints Bank as its attorney-in-fact to execute any such financing statements
in Borrower's name and to perform all other acts which Bank deems appropriate
to perfect and to continue perfection of the security interest of Bank.
Borrower hereby appoints Bank as Borrower's attorney-in-fact to endorse,
present and collect on behalf of Borrower and in Borrower's name any draft,
checks or other documents necessary or desirable to collect any amounts which
Borrower may be owed.  Bank is hereby granted a license or other right to use,
without charge, Borrower's labels, patents, copyrights, rights of use of any
name, trade secrets, trade names, trademarks and advertising matter, or any
Property of a similar nature, as it pertains to the Collateral, in advertising
for sale and selling any Collateral, and Borrower's rights under all licenses
and all franchise agreements shall inure to Bank's benefit.  The proceeds
realized from  the sale or other disposition of any Collateral may be applied,
after allowing two (2) Business Days for collection, first to the reasonable
costs, expenses and attorneys' fees and expenses incurred by Bank for
collection and for acquisition, completion, protection, removal, storage, sale
and delivering of the Collateral; secondly, to interest due upon any of the
Indebtedness; and thirdly, to the principal amount of the Indebtedness.  If any
deficiency shall arise, Borrower and each Guarantor shall remain jointly and
severally liable to Bank therefor.

      9.3   Entry   Borrower hereby irrevocably consents to any act by Bank or
its agents in entering upon any premises for the purposes of either (i)
inspecting the Collateral or (ii) taking possession of the Collateral and
Borrower hereby waives its right to assert against Bank or its agents any claim
based upon trespass or any similar cause of action for entering upon any
premises where the Collateral may be located.

      9.4   Other Rights   Borrower authorizes Bank without affecting
Borrower's obligations hereunder or under any other Loan Document from time to
time (i) to take from any party and hold additional Collateral or guaranties
for the payment of the Indebtedness or any part thereof, and to exchange,
enforce or release such collateral or guaranty of payment of the Indebtedness
or any part thereof and to release or substitute any endorser or guarantor or
any party who has given any security interest in any collateral as security for
the payment of the Indebtedness or any part thereof or any party in any way
obligated to pay the Indebtedness or any part thereof; and (ii) upon the
occurrence of any Event of Default to direct the manner of the disposition of
the Collateral and the enforcement of any endorsements, guaranties, letters of
credit or other security relating to the Indebtedness or any part thereof as
Bank in its sole discretion may determine.

      9.5   Waiver of Marshaling   Borrower hereby waives any right it may have
to require marshaling of its assets.

10.   Miscellaneous.

      10.1  No Waiver, Remedies Cumulative.   No failure on the part of Bank to
exercise, and no delay in exercising, any right hereunder or under any other
Loan Document shall operate as a waiver thereof, nor shall any single or
partial exercise of any right hereunder preclude any other or further exercise
thereof or the exercise of any other right.  The remedies herein provided are
cumulative and are in addition to any other remedies provided by law, any Loan
Document or otherwise.

      10.2  Survival of Representations.   All representations and warranties
made herein shall survive the making of the Loan hereunder and the delivery of
the Note, and shall continue in full force and effect so long as any
Indebtedness is outstanding, there exists any commitment by Bank to Borrower,
and until this Agreement is formally terminated in writing.

      10.3  Indemnity By Borrower; Expenses.   In addition to all other
Indebtedness, Borrower agrees to defend, protect, indemnify and hold harmless
Bank and its Affiliates and all of their respective officers, directors,
employees, attorneys, consultants and agents from and against any and all
losses, damages, liabilities, obligations, penalties, fees, costs and expenses
(including, without limitation, attorneys' and paralegals' fees, costs and
expenses) incurred by such indemnitees, whether prior to or from and after the
date hereof, as a result of or arising from or relating to (i) the due
diligence effort (including, without limitation, public record search,
recording fees, examinations and investigations of the properties of Borrower
and Borrower's operations), negotiation, preparation, execution and/or
performance of any of the Loan Documents or of any document executed in
connection with the transactions contemplated thereby and the perfection of
Bank's Liens in the Collateral, maintenance of the Loan by Bank, and any and
all amendments, modifications, and supplements of any of the Loan Documents or
restructuring of the Indebtedness, (ii) any suit, investigation, action or
proceeding by any Person (other than Borrower), whether threatened or
initiated, asserting a claim for any legal or equitable remedy against any
Person under any statute, regulation or common law principle, arising from or
in connection with Bank's furnishing of funds to Borrower under this Agreement,
(iii) Bank's preservation, administration and enforcement of its rights under
the Loan Documents and applicable law, including the reasonable fees and
disbursements of counsel for Bank in connection therewith, whether suit be
brought or not and whether incurred at trial or on appeal, (iv) periodic field
exams, audits and appraisals performed by Bank; (v) without limiting the
foregoing, the Securities Act of 1933, the Securities Act of 1934 or any other
Federal, state or foreign statutory law or regulation, at common law or
otherwise, and/or (vi) any matter relating to the financing transactions
contemplated by the Loan Documents or by any document executed in connection
with the transactions contemplated thereby, other than for such loss, damage,
liability, obligation, penalty, fee, cost or expense arising from such
indemnitee's gross negligence or willful misconduct.  If Borrower should fail
to pay any tax or other amount required by this Agreement to be paid, Bank may
make such payment and the amount thereof shall be payable on demand, shall bear
interest at the Default Rate from the date of demand until paid and shall be
deemed to be Indebtedness entitled to the benefit and security of the Loan
Documents.  In addition, Borrower agrees to pay and save Bank harmless against
any liability for payment of any state documentary stamp taxes, intangible
taxes or similar taxes (including interest or penalties, if any) which may now
or hereafter be determined to be payable in respect to the execution, delivery
or recording of any Loan Document or the making of any Advance, whether
originally thought to be due or not, and regardless of any mistake of fact or
law on the part of Bank or Borrower with respect to the applicability of such
tax.  Borrower's obligation for indemnification for all of the foregoing
losses, damages, liabilities, obligations, penalties, fees, costs and expenses
of Bank shall be part of the Indebtedness, secured by the Collateral,
chargeable against Borrower's loan account, and shall survive termination of
this Agreement.

      10.4  Notices.   Any notice or other communication hereunder under the
Note to any party hereto or thereto shall be by hand delivery, overnight
delivery, facsimile, telegram, telex or registered or certified mail and unless
otherwise provided herein shall be deemed to have been given or made when
delivered, telegraphed, telexed, faxed or three (3) Business Days after having
been deposited in the mails, postage prepaid, addressed to the party at its
address specified below (or at any other address that the party may hereafter
specify to the other parties in writing):

      Bank:       Wachovia Bank, National Association
                  100 South Ashley Drive
                  Suite 940
                  Tampa, Florida  33602
                  Attn:  Heather Devenbeck, Vice President

      With a copy to:

                  Edgel C. Lester, Jr., Esquire
                  Carlton Fields, P.A.
                  One Harbour Place, Fifth Floor
                  Tampa, Florida  33602

      Borrower:        Digital Lightwave, Inc.
                  15550 Lightwave Drive
                  Clearwater, Florida 33760
                  Attn:  Mr. Mark E. Scott, Vice  President, Finance, and Chief
Financial Officer

      10.5  Governing Law.   This Agreement and the Loan Documents shall be
deemed contracts made under the laws of the State of Florida and shall be
governed by and construed in accordance with the laws of said state (excluding
its conflict of laws provisions if such provisions would require application of
the laws of another jurisdiction).

      10.6  Successors and Assigns.   This Agreement shall be binding upon and
shall inure to the benefit of Borrower and Bank, and their respective
successors and assigns; provided, that Borrower may not assign any of its
rights hereunder without the prior written consent of Bank, and any such
assignment made without such consent will be void.

      10.7  Counterparts.   This Agreement may be executed in any number of
counterparts and by different parties hereto in separate counterparts, each of
which when so executed and delivered shall be deemed an original and all of
which when taken together shall constitute but one and the same instrument.

      10.8  No Usury.   Regardless of any other provision of this Agreement,
the Note or in any other Loan Document, if for any reason the effective
interest should exceed the maximum lawful interest, the effective interest
shall be deemed reduced to, and shall be, such maximum lawful interest, and (i)
the amount which would be excessive interest shall be deemed applied to the
reduction of the principal balance of the Note and not to the payment of
interest, and (ii) if the loan evidenced by the Note has been or is thereby
paid in full, the excess shall be returned to the party paying same, such
application to the principal balance of the Note or the refunding of excess to
be a complete settlement and acquittance thereof.

      10.9  Powers.   All powers of attorney granted to Bank are coupled with
an interest and are irrevocable.

      10.10 Approvals.   If this Agreement calls for the approval or consent of
Bank, such approval or consent may be given or withheld in the discretion of
Bank unless otherwise specified herein.

      10.11 Binding Arbitration; Preservation of Remedies.

            (a)   Binding Arbitration.    Upon demand of any party hereto,
whether made before or after institution of any judicial proceeding, any claim
or controversy arising out of, or relating to the Loan Documents ("Disputes")
between the parties hereto (a "Dispute") shall be resolved by binding
arbitration conducted under and governed by the Commercial Financial Disputes
Arbitration Rules (the "Arbitration Rules") of the American Arbitration
Association (the "AAA") and the Federal Arbitration Act. Disputes may include,
without limitation, tort claims, counterclaims, disputes as to whether a matter
is subject to arbitration, claims brought as class actions, or claims arising
from documents executed in the future.  A judgment upon the award may be
entered in any court having jurisdiction.  Notwithstanding the foregoing, this
arbitration provision does not apply to disputes under or related to swap
agreements.

            (b)   Special Rules.  All arbitration hearings shall be conducted
in the city in which the office of Bank first stated above is located.  A
hearing shall begin within 90 days of demand for arbitration and all hearings
shall be concluded within 120 days of demand for arbitration. These time
limitations may not be extended unless a party shows cause for extension and
then for no more than a total of 60 days.  The expedited procedures set forth
in Rule 51 et seq. of the Arbitration Rules shall be applicable to claims of
less than $1,000,000.  Arbitrators shall be licensed attorneys selected from
the Commercial Financial Dispute Arbitration Panel of the AAA.  The parties do
not waive applicable Federal or state substantive law except as provided
herein.

            (c)   Preservation and Limitation of Remedies. Notwithstanding the
preceding binding arbitration provisions, the parties agree to preserve,
without diminution, certain remedies that any party may exercise before or
after an arbitration proceeding is brought. The parties shall have the right to
proceed in any court of proper jurisdiction or by self-help to exercise or
prosecute the following remedies, as applicable: (i) all rights to foreclose
against any real or personal property or other security by exercising a power
of sale or under applicable law by judicial foreclosure including a proceeding
to confirm the sale; (ii) all rights of self-help including peaceful occupation
of real property and collection of rents, set-off, and peaceful possession of
personal property; (iii) obtaining provisional or ancillary remedies including
injunctive relief, sequestration, garnishment, attachment, appointment of
receiver and filing an involuntary bankruptcy proceeding; and (iv) when
applicable, a judgment by confession of judgment. Any claim or controversy with
regard to the parties' entitlement to such remedies is a Dispute.

            (d)   No Punitive Damages.   Each party agrees that it shall not
have a remedy of punitive or exemplary damages against the other in any Dispute
and hereby waives any right or claim to punitive or exemplary damages it may
have now or which may arise in the future in connection with any Dispute,
whether the Dispute is resolved by arbitration or judicially.

            (e)   Waiver of Jury Trial.   The parties acknowledge that by
agreeing to binding arbitration they have irrevocably waived any right they may
have to a jury trial with regard to a Dispute.

      10.12 Participations.   Bank shall have the right to enter into one or
more participation with other lenders with respect to the Indebtedness.  Upon
prior notice to Borrower of such participation, Borrower shall thereafter
furnish to such participant any information furnished by Borrower to Bank
pursuant to the terms of the Loan Documents.  Nothing in this Agreement or any
other Loan Document shall prohibit Bank from pledging or assigning this
Agreement and Bank's rights under any of the other Loan Documents, to any
Federal Reserve Bank in accordance with applicable law.

      10.13 Waiver of Certain Defenses.   To the fullest extent permitted by
applicable law, upon the occurrence of any Event of Default, neither Borrower
nor anyone claiming by or under Borrower will claim or seek to take advantage
of N.C.G.S. {section} 26-7, et seq. or any other law requiring Bank to attempt
to realize upon any collateral or collateral of any surety or guarantor, or any
appraisement, evaluation, stay, extension, homestead, redemption or exemption
laws now or hereafter in force in order to prevent or hinder the enforcement of
this Agreement.  Borrower, for itself and all who may at any time claim through
or under Borrower, hereby expressly waives to the fullest extent permitted by
law the benefit of all such laws.  All rights of Bank and all obligations of
Borrower hereunder shall be absolute and unconditional irrespective of (i) any
change in the time, manner or place of payment of, or any other term of, all or
any of the Indebtedness, or any other amendment or waiver of or any consent to
any departure from any provision of the Loan Documents, (ii) any exchange,
release or non-perfection of any other collateral given as security for the
Indebtedness, or any release or amendment or waiver of or consent to departure
from any guaranty for all or any of the Indebtedness, or (iii) any other
circumstance which might otherwise constitute a defense available to, or a
discharge of, Borrower or any third party, other than payment and performance
in full of the Indebtedness.

      10.14 Other Provisions.   Any other or additional terms and conditions
set forth in Exhibit 10.15 (if any) are hereby incorporated herein.

            IN WITNESS WHEREOF, the parties hereto  have  caused this Agreement
to be duly executed as of the day and year first above written.

                                   WACHOVIA BANK, NATIONAL ASSOCIATION

                                   By:
                                   Name:
                                         Vice President

                               DIGITAL LIGHTWAVE, INC., A DELAWARE CORPORATION

                                   By:
                                   Name:
                                   Title:

#.
                                       #

<PAGE>

                                 LIST OF EXHIBITS

                                     EXHIBITS

            (If any exhibit is omitted, the information called for therein
            shall be considered "None" or "Not Applicable")

      Exhibit     Section Reference                       Title

        1         1    ("Definitions")         Definitions

        4.3       4.3 ("Financial Condition")  Contingent Liabilities

        4.4       4.4 ("Litigation")           Litigation

        4.9       4.9 ("Taxes")                Description of Taxes Being
                                               Contested

        4.12      4.12 ("Subsidiaries")        List of Subsidiaries

        4.13      4.13 ("Environmental")       Environmental Disclosures

        4.21      4.21 ("Additional Representations")Additional Representations

      10.15       10.15 ("Other Provisions")   Additional Terms

<PAGE>
      EXHIBIT 1

                                DEFINITIONS

1.1   DEFINED TERMS:

      "Advance"  means  an  advance  of  proceeds  of  the  Loan to Borrower
pursuant to this Agreement.

      "Advance Date" means the date on which an Advance is made.

      "Advance Request" means the written request for an Advance  under  the
Loan  as  identified  in  Subsection  2.4  hereof  and  shall  also  include
presentments   triggering  an  automatic  Advance  under  the  any  services
agreement entered into between Borrower and Bank.

      "Affiliate"  of  a  Person means (a) any Person directly or indirectly
owning 5% or more of the voting  stock  or rights of such named Person or of
which the named Person owns 5% or more of  such  voting stock or rights; (b)
any  Person  controlling, controlled by or under common  control  with  such
named Person;  (c) any officer, director or employee of such named Person or
any Affiliate of  the  named  Person; and (d) any family member of the named
Person or any Affiliate of such named Person.

      "Arbitration Rules" has the meaning set forth in Section 10.11.

      "Average Available Principal Balance" means, for any period, the daily
average, during such period, of  the difference between (a) the Maximum Loan
Amount, minus (b) the outstanding principal balance of the Loan.

      "Business Day" means a weekday  on which commercial banks are open for
business in Tampa, Florida.

      "Borrowing Base" means an amount  equal  to  the  sum of the following
which,  at  the  time  of calculation of the Borrowing Base,  are  owned  by
Borrower,  held  in  an  account  maintained  by  Borrower  with  Bank,  and
constitute Collateral in which  Bank has a first priority perfected security
interest:

            (a)  95%  of  the market  value  of  U.S.  Government  (or  U.S.
Government Agency) Obligations having a maturity of two years or less; plus

            (b)  90%  of the  market  value  of  U.S.  Government  (or  U.S.
Government Agency) Obligations  having  a  maturity  of more than two years;
plus

            (c)  85% of the market value of Municipal Bonds  (Rating  Aaa  -
Baa3) having a maturity of five years or less; plus

            (d) 80%  of  the  market  value of Municipal Bonds (Rating Aaa -
Baa3) having a maturity of more than five years; plus

            (e) 85% of the market value  of  Corporate  Bonds  (Rating Aaa -
      Baa3, non-convertible, NYSE) having a
maturity of two years or less; plus

            (f)  80%  of the market value of Corporate Bonds (Rating  Aaa  -
Baa3) having a maturity of more than two years; plus

            (g) 85% of the market value of Commercial Paper (Rating A+ - A2,
P1 - P2);

provided that, in each case, market value of the foregoing, is determined by
Bank in its sole reasonable  discretion, and further provided that Bank may,
by notice to Borrower, exclude  from the Borrowing Base any of the foregoing
assets upon Bank's reasonable determination that such assets have materially
declined in value.

      "Code" means the Uniform Commercial Code, as in effect in Florida from
time to time.

      "Collateral"  means  all  of  the  stocks,  bonds,  commercial  paper,
treasury bills, securities, securities  entitlements,  securities  accounts,
instruments, documents, accounts, general intangibles, chattel paper,  money
and  other assets, now or hereafter owned by Borrower and maintained or held
or otherwise possessed or controlled by, or on deposit or in trust with Bank
or an  Affiliate  of  Bank,  whether held by Bank in trust, as a bailment or
otherwise,  wherever located, and  including  without  limitation,  (a)  all
securities and  securities  entitlements,  whether  or not certificated, and
wherever  evidenced  by  book  entry or otherwise, and (b)  all  securities,
securities   entitlements,   instruments,   documents,   accounts,   general
intangibles, chattel paper, money  and other assets of Borrower held by Bank
in account number 4050000234 or any similar or replacement account; together
with  all dividends thereof, interest  thereon  and  voting  rights  related
thereto,  and  all  replacements, substitutions, profits, products, and cash
and non-cash proceeds  of the foregoing in any form and wherever located and
all books and records in  whatever  form  maintained.   Items  of Collateral
shall have the meanings ascribed to them in the Code or such other  meanings
commonly ascribed thereto.

      "Debt" means all liabilities of a Person as determined under GAAP  and
all obligations which such Person has guaranteed or endorsed or is otherwise
secondarily  or jointly liable for, and shall include, without limitation ()
all obligations  for  borrowed  money  or  purchased  assets, () obligations
secured  by  assets  whether or not any personal liability  exists,  ()  the
capitalized amount of  any  capital  or  finance  lease  obligations, () the
unfunded  portion of pension or benefit plans or other similar  liabilities,
() obligations  as  a general partner, () contingent obligations pursuant to
guaranties, endorsements, letters of credit and other secondary liabilities,
and () obligations for deposits.

      "Default Rate"  means  the  rate  of interest specified in the Note to
apply after a default under the Note or,  if  no  such  rate is specified, a
rate equal to the highest rate of interest allowed by law.

      "Demand  Deposit  Account"  means  the DDA Account as defined  in  any
services agreement entered into between Borrower and Bank.

      "Disputes" has the meaning set forth in Section 10.11.

      "Environmental Laws" means, collectively  the following acts and laws,
as  amended:   the  Comprehensive Environmental Response,  Compensation  and
Liability Act of 1980;  the  Superfund Amendments and Reauthorization Act of
1986; the Resource Conservation  and Recovery Act; the Toxic Substances Act;
the Clean Water Act; the Clean Air  Act;  the  Oil  Pollution  and Hazardous
Substances Control Act of 1978; and any other "Superfund" or "Superlien" law
or  any  other federal, state or local statute, law, ordinance, code,  rule,
regulation,  order or decree relating to, or imposing liability or standards
of conduct concerning, any hazardous, toxic or dangerous waste, substance or
material, as now or at any time hereafter in effect.

      "Event of  Default"  means  any event specified as such in Section 8.1
hereof ("Events of Default"), provided  that there shall have been satisfied
any requirement in connection with such event  for  the  giving of notice or
the  lapse  of  time,  or both; "Default"  or "default" means  any  of  such
events, whether or not any  such requirement for the giving of notice or the
lapse of time or the happening  of any further condition, event or act shall
have been satisfied.

      "GAAP" means generally accepted  accounting principles as in effect in
the Unites States from time to time.

      "Indebtedness" means all obligations  now or hereafter owed to Bank by
Borrower,  whether  related  or unrelated to the  Loan,  including,  without
limitation,  amounts  owed or to  be  owed  under  the  terms  of  the  Loan
Documents, or arising out  of the transactions described therein, including,
without limitation, the Loan, sums advanced to pay overdrafts on any account
maintained by Borrower with  Bank, reimbursement obligations for outstanding
letters of credit issued for the  account  of  Borrower or its Subsidiaries,
amounts paid by Bank under letters of credit or  drafts accepted by Bank for
the  account  of Borrower or its Subsidiaries, together  with  all  interest
accruing thereon, all obligations under any swap agreements as defined in 11
U.S.C. {section}101  between  Bank and Borrower whenever executed, all fees,
all costs of collection, attorneys' fees and expenses of or advances by Bank
which Bank pays or incurs in discharge  of  obligations  of  Borrower  or to
inspect,  repossess,  protect, preserve, store or dispose of any collateral,
whether such amounts are now due or hereafter become due, direct or indirect
and whether such amounts  due  are  from  time  to  time reduced or entirely
extinguished and thereafter re-incurred.

      "Item" means any "item" as defined in Section 4-104  of  the Code, and
shall also mean and include checks, drafts, money orders or other  media  of
payment.

      "Lien"  means  any  mortgage,  pledge,  statutory  lien  or other lien
arising by operation of law, security interest, trust arrangement,  security
deed,   financing   lease,   collateral  assignment  or  other  encumbrance,
conditional sale or title retention  agreement,  or  any  other  interest in
property  designed to secure the repayment of Indebtedness, whether  arising
by agreement or under any statute or law or otherwise.

      "Loan" means the revolving loan identified in Section 2.1 hereof.

      "Loan  Documents"  means this Agreement, any other Security Agreement,
any Note, the Advance Requests,  UCC-1  financing  statements  and all other
documents   and   instruments   now  or  hereafter  evidencing,  describing,
guaranteeing or securing the Indebtedness  contemplated  hereby or delivered
in connection herewith, as they may be modified.

      "Material Adverse Effect" means any (i) material adverse  effect  upon
the validity, performance or enforceability of any of the Loan Documents  or
any  of  the  transactions  contemplated  hereby  or  thereby, (ii) material
adverse  effect  upon  the  properties,  business,  prospects  or  condition
(financial or otherwise) of Borrower and/or any other Person obligated under
any of the Loan Documents, or (iii) material adverse effect upon the ability
of Borrower or any other Person to fulfill any obligation  under  any of the
Loan Documents.

      "Maximum Loan Amount" means $27,500,000.00.

      "Note"  shall have the meaning set forth in Section 2.2 and any  other
promissory note  now  or  hereafter  evidencing  any  Indebtedness,  and all
modifications, extensions and renewals thereof.

      "Person"   means   any  natural  person,  corporation,  unincorporated
organization,  trust,  joint-stock   company,  joint  venture,  association,
company, limited or general partnership,  any  government  or  any agency or
political   subdivision   of   any   government,  or  any  other  entity  or
organization.

      "Regulated Materials" means any  hazardous,  toxic or dangerous waste,
substance   or  material,  the  generation,  handling,  storage,   disposal,
treatment or emission of which is subject to any Environmental Law.

      "Revolving Credit Period" means the period from and including the date
of this Agreement to but not including the Termination Date.

      "Security Agreement" means any mortgage, security agreement or similar
instrument now  or  hereafter  executed by Borrower or other Person granting
Bank a security interest in any collateral to secure the Indebtedness.

      "Solvent"  means, as to any  Person,  that  such  Person  has  capital
sufficient to carry  on  its  business  and  transactions  in  which  it  is
currently  engaged and all business and transactions in which it is about to
engage, is able  to  pay  its  debts as they mature, and has assets having a
fair valuation greater than its liabilities, at fair valuation.

      "Subsidiary" means the Persons  named on Exhibit 4.13, if any, and any
other corporation, partnership or other  entity  in which Borrower, directly
or indirectly, owns more than fifty percent (50%)  of  the stock, capital or
income  interests,  or other beneficial interests, or which  is  effectively
controlled by such Person.

      "Termination Date" means April 15, 2005.

1.2.  FINANCIAL TERMS.     All  financial  terms  used herein shall have the
meanings  assigned  to  them  under  GAAP unless another  meaning  shall  be
specified.
<PAGE>
                                    EXHIBIT 4.3

                                FINANCIAL CONDITION
<PAGE>
                                    EXHIBIT 4.4

                                     LITIGATION
<PAGE>
                                  EXHIBIT 4.9

                     DESCRIPTION OF TAXES BEING CONTESTED

<PAGE>
EXHIBIT 4.12

                             LIST OF SUBSIDIARIES

<PAGE>
EXHIBIT 4.13

                                 ENVIRONMENTAL
                              [No Disclosures Required]

<PAGE>
EXHIBIT 4.21

                          ADDITIONAL REPRESENTATIONS

                                     None

<PAGE>
EXHIBIT 10.15

                               ADDITIONAL TERMS

                                     NoneEXHIBIT 10.28
                             REVOLVING CREDIT NOTE

$27,500,000.00                                                   Tampa, Florida
                                                                 April 15, 2002

      FOR VALUE RECEIVED, the undersigned, DIGITAL LIGHTWAVE, INC., a Delaware
corporation ("Maker"), promises to pay to the order of WACHOVIA BANK, NATIONAL
ASSOCIATION, a national banking association ("Lender"), in lawful money of the
United States of America, in immediately available funds, at 100 South Ashley
Drive, Suite 1000, Tampa, Florida 33602 or at such other location as the Lender
may designate from time to time, the principal sum of  TWENTY-SEVEN MILLION
FIVE HUNDRED THOUSAND AND NO/100 DOLLARS ($27,500,000.00), or so much thereof
as may be advanced and remain outstanding, together with interest on the unpaid
principal balance at the rate and on the terms provided in this Revolving
Credit Note.

      This Revolving Credit Note ("Note") is the Revolving Credit Note referred
to in, issued pursuant to, and secured by, that certain Revolving Credit and
Security Agreement, dated of even date herewith between Lender and Maker (as
amended from time to time, "Credit Agreement"), the terms of which are
incorporated herein by reference.  The Credit Agreement contains a provision,
among other things, for the acceleration of the stated maturity of this Note
upon the happening of certain events set forth therein.  Capitalized terms,
unless otherwise defined herein, shall have the meaning given such terms in the
Credit Agreement.

      1.    INTEREST

            (a)   Interest Rate.  Interest shall accrue on the average daily
outstanding principal balance hereof from the date of advancement thereof at a
variable rate, based upon a year of 360 days and actual days elapsed, equal to
the Contract Rate, as hereinafter defined, subject to availability.

            (b)   Certain Defined Terms.  As used herein, the following terms
shall have the following meanings:

                  (i)   "Business Day" shall mean any day on which the Lender's
offices in Tampa, Florida, are open for business.  Unless specifically denoted
"Business Days" herein, references to "days" shall mean calendar days.

                  (ii)  "Business Day Convention" shall mean the convention for
adjusting any relevant date if it would otherwise fall on a day that is not a
Business Day.  If "Modified Following" is specified, that date will be the
first following day that is a Business Day unless that day falls in the next
calendar month, in which case that date will be the first preceding day that is
a Business Day.

                  (v)   The "Contract Rate" shall mean the 1 Month LIBOR Market
Index Rate plus .70% (70 basis points), as that rate may change from day to
day.

                  (vi)  A "LIBOR Period" shall mean a one month period, but in
no event shall exceed in duration the remainder of the term of the loan
evidenced hereby.

                  (vii) The "1 Month LIBOR Market Index Rate" shall mean for
any day, the rate for one (1) month U.S. dollar deposits as reported on
Telerate page 3750 as of 11:00 a.m., London time, on such day, or if such day
is not a London business day, then the immediately preceding London business
day (or if not so reported, then as determined by Bank from another recognized
source or interbank quotation).

                   (ix) The "Prime Rate" shall mean a variable rate per annum
which equals the rate of interest announced from time to time by Lender as its
prime rate, but which is not necessarily the lowest or best rate offered
thereby at any time, such interest rate to change automatically from time to
time, effective as of the effective date of each change in the prime rate.

             (c)  Limitations on LIBOR; Compensation for Increased Costs.  If
at any time prior to the proposed commencement of a LIBOR Period, Lender shall
have determined in good faith (which determination shall be conclusive) and
shall have given notice to Maker that it has become impractical for Lender to
continue to offer the Contract Rate to Maker or that Lender's ability to
continue to offer the Contract Rate to Maker has been materially adversely
affected because:  (i) by reason of circumstances affecting the London
Interbank Eurodollar Market, adequate and fair means do not exist for
ascertaining the rate of interest to be applicable during such LIBOR Period;
(ii) deposits in U.S. Dollars for the duration of such LIBOR Period are not
available to Lender in the London Interbank Eurodollar Market in sufficient
amounts in the ordinary course of business; or (iii) the London Interbank
Offered Rate will not compensate Lender for the cost to Lender of the funds to
be used by it to fund  the loan evidenced hereby during such LIBOR Period;
then, from the date of such determination or after the end of such period as
Lender, in its discretion, shall have agreed, the entire outstanding principal
balance hereof shall accrue interest at a rate ("Adjusted Rate"), based on the
Prime Rate or another index selected by Lender, which Adjusted Rate would have,
until the date of such determination, resulted in the same amount of interest
having been charged under the Loan as was charged using the Contract Rate.
Notwithstanding anything herein contained, if at any time while any principal
remains outstanding hereunder, Lender determines in good faith (which
determination shall be conclusive) and notifies Maker that, by reason of any
law, regulation, treaty or official directive, or any change therein or in the
interpretation or application thereof, by the authority charged with the
administration thereof or by any court, it is unlawful or impracticable for
Lender to continue to maintain or offer the Contract Rate or to give effect to
any of its related obligations as contemplated hereby, Lender, by such notice,
may declare that the entire outstanding principal balance hereof, together with
all accrued and unpaid interest thereon to the date of repayment, shall
forthwith or at the end of such period as Lender, in its discretion, shall have
agreed, accrue interest at the Adjusted Rate.

            Maker shall reimburse Lender for all losses or expenses incurred by
Lender as a result of (i) Maker's failure to pay any sum due hereunder on its
due date, (ii) repayment of any portion of the loan evidenced hereby prior to
the end of the applicable LIBOR Period, or (iii) any acceleration of the due
date of the loan evidenced hereby pursuant hereto.

            (d)   Taxation, Capital Adequacy and Other Increases in Cost of
Maintaining LIBOR Rate.  If there occurs any future law, regulation, treaty or
official directive (whether or not having the force of law) or any change in
applicable present or future law, regulation, treaty or directive (whether or
not having force of law) or in the interpretation or application thereof by any
court or by any governmental or other authority or entity charged with the
administration thereof which now or hereafter shall:

                  (i)   subject Lender to any tax of any kind whatsoever with
                        respect to this Note or any outstanding principal
                        hereunder, or change the basis of taxation of payments
                        to Lender of principal, interest, fees or any other
                        amount payable hereunder (except for changes in the
                        rate of any franchise tax or tax on the capital or
                        overall net income of Lender imposed by the laws of the
                        United States, or any state thereof, or taxing
                        authority therein);

                  (ii)  impose, modify or make applicable any reserve, special
                        deposit or similar requirement against assets held by,
                        or deposits or other liabilities in or for the account
                        of, or any other acquisition of funds by, Lender; or

                  (iii) impose on Lender or the London Interbank Eurodollar
                        Market any other condition, restriction or limitation;

and the result of any of the foregoing is to increase the cost to Lender of
maintaining or offering the Contract Rate or to reduce any amount receivable
hereunder with respect thereto, then, in any such case, at Maker's election,
either (1) Maker shall promptly pay to Lender, upon demand such additional
amounts necessary to compensate Lender for such additional cost or reduced
amount received which Lender deems to be material as are determined in good
faith by Lender or (2) thereafter, all amounts outstanding under the loan
evidenced hereby shall commence accruing interest at the Prime Rate upon
expiration of each LIBOR Period then in effect with respect to any portion of
the loan evidenced hereby.  If Lender becomes entitled to claim any additional
amounts pursuant to this clause, it shall promptly notify Maker of the event by
reason of which it has become so entitled.

            (e)   Maximum Amount of Interest.  It is the intention of Maker and
Lender to conform strictly to the interest law applicable to this loan
transaction.  Accordingly, it is agreed that notwithstanding any provisions to
the contrary in this Note, or in any of the documents securing payment hereof
or otherwise relating hereto, the aggregate of all interest and any other
charges or consideration constituting interest under the applicable interest
law that is taken, reserved, contracted for, charged or received under this
Note or under any of the other aforesaid agreements or otherwise in connection
with this loan transaction shall under no circumstances exceed the maximum
amount of interest allowed by the interest law applicable to this loan
transaction.  If any excess of interest in such respect is provided for, in
this Note or in any of the documents securing payment hereof or otherwise
relating hereto, then, in such event, (i) the provisions of this paragraph
shall govern and control, (ii) neither Maker nor Maker's heirs, legal
representatives, successors or assigns shall be obligated to pay the amount of
such interest to the extent that it is in excess of the maximum amount of
interest allowed by the interest law applicable to this loan transaction, (iii)
any excess shall be deemed a mistake and cancelled automatically and, if
theretofore paid, shall be credited on this Note by Lender (or if this Note
shall have been paid in full, refunded to Maker), and (iv) the effective rate
of interest shall be automatically subject to reduction to the maximum legal
rate of interest allowed under such interest law as now or hereafter construed
by courts of appropriate jurisdiction.  To the extent permitted by the interest
law applicable to this loan transaction, all sums paid or agreed to be paid to
Lender for the use, forbearance or detention of the indebtedness evidenced
hereby shall be amortized, prorated, allocated and spread throughout the full
term of this Note.

      2.    PAYMENT TERMS.

            (a)   Beginning on July 15, 2002, and continuing on the 15 day of
each October, January, April and July thereafter, through and including January
15, 2005, Borrower shall pay to Lender all accrued interest under this Note.
Lender, at its option, may debit from Borrower's account: ABA #063-107-513,
Account # 2000007273456,  all accrued and unpaid interest due and owing on any
payment date specified above.  Maker hereby authorizes Lender to debit the
account referenced above for the payment of accrued but unpaid interest.

            (b)   On April 15, 2005, Borrower shall pay the entire outstanding
principal balance under this Note, together with accrued and unpaid interest
and other charges.

            (c)   Notwithstanding any term herein to the contrary or any term
of any Other Agreements, upon the occurrence of an Event of Default, Lender
shall have the right to demand immediate payment of the entire outstanding
principal balance hereof, together with all accrued and unpaid interest and
charges thereon.

      3.    REVOLVING NOTE.  Subject to the limitations herein and in the
Credit Agreement, Maker may, during the term of this Note, borrow, prepay and
reborrow the principal amount of this Note.

      4.    DEFAULT RATE.  Upon any Event of Default, and continuing until the
Event of Default is cured, the outstanding principal of the loan and all other
indebtedness evidenced hereby shall bear interest at a rate per annum,
calculated on the basis of a 360-day year and days actually elapsed, equal to
the Contract Rate (or, if applicable, the Adjusted Rate) plus two percent
(2.0%), payable on demand, which rate shall apply as well before as after
judgment.

      5.    MISCELLANEOUS.

            (a)   If any payment of principal or interest on this Note shall
become due on a Saturday, Sunday or on any other day on which banks in Tampa,
Florida, are not open for business, such payment shall be made on the
immediately preceding Business Day.

            (b)   All payments received by Lender hereunder shall be applied
first to unpaid interest and other charges and costs payable by Maker and
second to the principal balance hereof.

            (c)   Maker hereby waives presentment, demand, protest and notice
of any kind in connection with this Note.

            (d)   This Note shall bind Maker and its successors and assigns,
and the benefits hereof shall inure to the benefit of Lender and its successors
and assigns.  All references herein to the "Maker" and "Lender" shall be deemed
to apply to the Maker and Lender, respectively, and their respective successors
and assigns.

            (e)   This Note, for all purposes, shall be governed by, and
construed in accordance with, the laws of the State of Florida.  In the event
any provision of this Note shall be prohibited or invalid under applicable law,
such provision shall be ineffective to the extent of such prohibition or
invalidity without invalidating the remainder of such provision or the
remaining provisions of this Note.

      6.    ARBITRATION.  All parties to this Note agree as follows:

            (a)   Upon demand of any party hereto, whether made before or after
      institution of any judicial proceeding, any claim or controversy arising
      out of, or relating to this Note between the parties hereto ("Dispute")
      shall be resolved by binding arbitration conducted under and governed by
      the Commercial Finance Disputes Arbitration Rules ("Arbitration Rules")
      of the American Arbitration Association ("AAA") and the Federal
      Arbitration Act.  Disputes may include, without limitation, tort claims,
      counterclaims, disputes as to whether a matter is subject to arbitration,
      claims brought as class actions, or claims arising from documents
      executed in the future.  A judgment upon the award may be entered in any
      court having jurisdiction.  Notwithstanding the foregoing, this
      arbitration provision does not apply to disputes under or related to swap
      agreements.

            (b)   All arbitration hearings shall be conducted in the city in
      which the office of Lender is located.  A hearing shall begin within 90
      days of demand for arbitration, and all hearings shall be concluded
      within 120 days of demand for arbitration.  These time limitations may
      not be extended unless a party shows cause for extension and then for no
      more than a total of 60 days.  The expedited procedures set forth in Rule
      51 et seq. of the Arbitration Rules shall be applicable to claims of less
      than $1,000,000.00.  Arbitrators shall be licensed attorneys selected
      from the Commercial Financial Dispute Arbitration Panel of the AAA.  The
      parties do not waive applicable Federal or state substantive law except
      as provided herein.

            (c)   Notwithstanding the preceding binding arbitration provisions,
      the parties agree to preserve, without diminution, certain remedies that
      any party may exercise before or after an arbitration proceeding is
      brought.  The parties shall have the right to proceed in any court of
      proper jurisdiction or by self-help to exercise or prosecute the
      following remedies as applicable:  (i) all rights to foreclose against
      any real or personal property or other security by exercising a power of
      sale or under applicable law by judicial foreclosure including a
      proceeding to confirm the sale; (ii) all rights of self-help including
      peaceful occupation of real property and collection of rents, set-off,
      and peaceful possession of personal property; (iii) obtaining provisional
      or ancillary remedies including injunctive relief, sequestration,
      garnishment, attachment, appointment of receiver and filing an
      involuntary bankruptcy proceeding; and (iv) when applicable, a judgment
      by confession of judgment.  Any claim or controversy with regard to any
      party's entitlement to such remedies is a Dispute.  Each party agrees
      that it shall not have a remedy of punitive or exemplary damages against
      the other in any Dispute and hereby waive any right or claim to punitive
      or exemplary damages they have now or which may arise in the future in
      connection with any Dispute, whether the Dispute is resolved by
      arbitration or judicially.

      IN WITNESS WHEREOF, Maker has executed this Note on the date first above
written.

                                           DIGITAL LIGHTWAVE, INC., a Delaware
                                           corporation

                                           By:
                                                 Name:
                                                 Title:

                                                               [CORPORATE SEAL]

#.

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