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                                                                   EXHIBIT 10(a)

                               LETTER OF AGREEMENT

This agreement is made on April 6, 2001 between TECHNOLOGY VENTURES GROUP, INC.
and it's successors, located at 12400 S.W 134th Court, Suite 11, Miami, Florida
33186 and EQUITY HOLDING GROUP, INC.

The purpose of the agreement is to define the services to be provided and
payment of certain expenses during the life of the agreement.

Both parties agree that the current financial resources of the company cannot
support a budget for a separate office facility and staff for TVG. Therefore
both parties agree to the acceptance of $200 per month expense allowance to
provide office space, secretarial and administrative support until such time as
both parties agree to establish a new arrangement.

This agreement is from month to month commencing on April 1st, 2001 and can be
modified at the beginning of any succeeding month.

This agreement can be terminated by either party with 30 days written notice to
the addresses provided under the acknowledgement signatures.

Technology Ventures Group, Inc.              Equity Holding Group, Inc.
12400 S.W 134th Court, Ste #11               12400 S.W 134th Court, Ste 11
Miami, Florida 33186                         Miami, Florida 33186

Signed: /s/ MCIVAN A. JARRETT                Signed: /s/ JOY LEACOCK-JARRETT
       -----------------------------                ------------------------

Date:  April 6, 2001                         Date: April 6, 2001<PAGE>   1
                                                                   EXHIBIT 10(b)

                               LETTER OF AGREEMENT

This agreement is made on April 6, 2001 between TECHNOLOGY VENTURES GROUP, INC.
and it's successors, located at 12400 S.W 134th Court, Suite 11, Miami, Florida
33186 and MCIVAN A. JARRETT.

The purpose of the agreement is to define the functions to be performed and
payment of certain expenses during the life of the agreement.

Both parties agree that the current financial resources of the company cannot
support traditional salaries for services and therefore both parties agree to
the acceptance of $1000 per month expense allowance in lieu of salary until such
time as both parties agree to change the amount and the payment schedule. Normal
benefits provided by the company such as vacation, sick leave and other benefits
defined by the companies' personnel policies will be made available to Mr.
Jarrett.

This agreement is from month to month commencing on April 1st, 2001 and can be
modified at the beginning of any succeeding month.

Mr. McIvan A. Jarrett will assume the title and responsibilities of President
and will perform such duties as assigned by the Board of Directors.

Consistent with the company and the board policy of providing Director and
Officer (D & O) insurance, Mr. Jarrett will be provided full coverage under the
D & O policy.

This agreement can be terminated by either party with 30 days written notice to
the addresses provided under the acknowledgement signatures.

Technology Ventures Group, Inc.             Mr. McIvan A. Jarrett
12400 S.W 134th Court, Ste #11              12400 S.W 134th Court, Ste #11
Miami, Florida 33186                        Miami, Florida 33186

Signed: /s/ MCIVAN A. JARRETT               Signed: /s/ MCIVAN A. JARRETT
        ---------------------                       ---------------------

Date:  April 6, 2001                                 Date:  April 6, 2001<PAGE>   1
                                                                   EXHIBIT 10(c)

                               LETTER OF AGREEMENT

This agreement is made on April 6, 2001 between TECHNOLOGY VENTURES GROUP, INC.
and it's successors, located at 12400 S.W 134th Court, Suite 11, Miami, Florida
33186 and NELSON FUTCH.

The purpose of the agreement is to define the functions to be performed and
payment of certain expenses during the life of the agreement.

Both parties agree that the current financial resources of the company cannot
support traditional salaries for services and therefore both parties agree to
the acceptance of $100 per month expense allowance in lieu of salary until such
time as both parties agree to change the amount and the payment schedule. Normal
benefits provided by the company such as vacation, sick leave and other benefits
defined by the companies' personnel policies will be made available to Mr.
Futch.

This agreement is from month to month commencing on April 1st, 2001 and can be
modified at the beginning of any succeeding month.

Mr. Futch will assume the title and responsibilities of Vice President and will
perform such duties as assigned by the President of the company.

Consistent with the company and the board policy of providing Director and
Officer (D & O) insurance, Mr. Futch will be provided full coverage under the
D & O policy.

This agreement can be terminated by either party with 30 days written notice to
the addresses provided under the acknowledgement signatures.

Technology Ventures Group, Inc.             Nelson Futch
12400 S.W 134th Court, Ste #11              6245 Woodbury Road
Miami, Florida 33186                        Boca Raton, Florida 33433

Signed: /s/ MCIVAN A. JARRETT               Signed:  /s/ NELSON FUTCH
        ---------------------                        ----------------

Date:  April 6, 2001                        Date:  April 6, 2001<PAGE>   1
                                                                   EXHIBIT 10(d)

                               LETTER OF AGREEMENT

This agreement is made on April 6, 2001 between TECHNOLOGY VENTURES GROUP, INC.
and it's successors, located at 12400 S.W 134th Court, Suite 11, Miami, Florida
33186 and JERROLD BROOKS.

The purpose of the agreement is to define the functions to be performed and
payment of certain expenses during the life of the agreement.

Both parties agree that the current financial resources of the company cannot
support traditional salaries for services and therefore both parties agree to
the acceptance of $200 per month expense allowance in lieu of salary until such
time as both parties agree to change the amount and the payment schedule. Normal
benefits provided by the company such as vacation, sick leave and other benefits
defined by the companies' personnel policies will be made available to Mr.
Brooks.

This agreement is from month to month commencing on April 1st, 2001 and can be
modified at the beginning of any succeeding month.

Mr. Brooks will assume the title and responsibilities of Executive Vice
President and will perform such duties as assigned by the President of the
company.

Consistent with the company and the board policy of providing Director and
Officer (D & O) insurance, Mr. Brooks will be provided full coverage under the
D & O policy.

This agreement can be terminated by either party with 30 days written notice to
the addresses provided under the acknowledgement signatures.

Technology Ventures Group, Inc.             Jerrold Brooks
12400 S.W 134th Court, Ste #11              506 Perugia Avenue.
Miami, Florida 33186                        Coral Gables, Florida 33146

Signed:  /s/ MCIVAN A. JARRETT              Signed:  /s/ JERROLD BROOKS
        ----------------------                       ------------------

Date: April 6, 2001                         Date:  April 6, 2001<PAGE>   1

                                                                    EXHIBIT 10.2

                               FIRST AMENDMENT TO
                 AMENDED AND RESTATED INVESTOR RIGHTS AGREEMENT

         FIRST AMENDMENT TO AMENDED AND RESTATED INVESTOR RIGHTS AGREEMENT,
dated as of August 3, 2001 (this "Amendment"), by and among NORTEL NETWORKS LLC,
a limited liability company organized under the laws of Delaware ("Investor"),
NORTEL NETWORKS INC., a Delaware corporation ("Parent"), and ARRIS GROUP, INC.
f/k/a Broadband Parent Corporation, a Delaware corporation (the "Company").

         WHEREAS, pursuant to an Agreement and Plan of Reorganization dated as
of October 18, 2000, as amended by the First Amendment to Agreement and Plan of
Reorganization dated as of April 9, 2001 (the "Plan of Reorganization") among
the Company, ANTEC Corporation, Broadband Transition Corporation, Parent, the
Investor and Arris Interactive L.L.C., Investor will receive at the Closing (as
such term is defined in the Plan of Reorganization) shares of Common Stock of
the Company;

         WHEREAS, as an inducement to the Company and ANTEC Corporation to enter
into the Plan of Reorganization, Investor and Parent agreed to enter into an
Amended and Restated Investor Rights Agreement dated as of April 9, 2001 (the
"Original Agreement") to provide for certain agreements and obligations of the
parties following the Closing;

         WHEREAS, as part of the transactions contemplated by the Plan of
Reorganization and concurrently with the execution of this Amendment, the
Company, ANTEC Corporation and Investor are entering into a Second Amended and
Restated Limited Liability Company Agreement of Arris Interactive L.L.C. (the
"New LLC Agreement") under which Investor and any permitted transferee may
receive under the circumstances described in Section 8.03 therein additional
shares of Common Stock of the Company; and

         WHEREAS, the parties hereto desire to modify certain provisions of the
Original Agreement to allow for the issuance of the LLC Conversion Shares as set
forth in this Amendment;

         NOW, THEREFORE, in consideration of the premises and the mutual
representations, warranties, covenants and agreements contained herein, the
parties hereto hereby agree as follows:

                                    SECTION 1
                                   AMENDMENTS

         Section 1.1. Definitions. Unless otherwise defined herein, all
capitalized terms shall have the meaning given such terms in the Original
Agreement. The following terms shall have the meanings set forth below:

                                       5
<PAGE>   2

         Section 1.2. Amendment of Definition of "Agreement". The term
"Agreement," as set forth in Section 1.1 of the Original Agreement, is hereby
deleted in its entirety and the following definition is substituted in lieu
thereof:

         "Agreement" shall mean the Original Agreement as amended by this
Amendment.

         Section 1.3. Definition of "LLC Conversion Shares". Section 1.1 of the
Original Agreement is hereby amended by adding the following definition of "LLC
Conversion Shares":

                  "LLC Conversion Shares" shall mean shares of Common Stock (a)
         issued pursuant to Section 8.03(a)(i) of the New LLC Agreement, (b)
         issuable upon conversion of the Company preferred stock that may be
         issued pursuant to Section 8.03(a)(ii) of the New LLC Agreement or (c)
         issuable upon conversion of the subordinated note of the Company that
         may be issued pursuant to Section 8.03(a)(iii) of the New LLC
         Agreement.

         Section 1.4. Definition of "New LLC Agreement". Section 1.1 of the
Original Agreement is hereby amended by adding the following definition of "New
LLC Agreement":

                  "New LLC Agreement" has the meaning set forth in the preamble
         of this Amendment.

         Section 1.5. Amendment of Section 3.1(a) of the Original Agreement.
Section 3.1(a) of the Original Agreement is hereby deleted in its entirety and
the following is substituted in lieu thereof:

                  (a) acquire, offer or propose to acquire or agree to acquire,
         whether by purchase, tender or exchange offer, through the acquisition
         of control of another person, by joining a partnership, limited
         partnership, syndicate or other 13D Group or otherwise, Beneficial
         Ownership of any Voting Securities, Derivative Securities or any other
         securities of the Company or any rights to acquire (whether currently,
         upon lapse of time, following the satisfaction of any conditions, upon
         the occurrence of any event or any combination of the foregoing) any
         Voting Securities, other than (i) the acquisition of the Shares
         pursuant to the Plan of Reorganization, (ii) the acquisition of Voting
         Securities as a result of any stock splits, stock dividends or other
         distributions, recapitalizations or offerings made available by the
         Company to holders of Voting Securities generally or (iii) in a
         transaction in which the Investor or Parent or an Affiliate of the
         Investor or Parent acquires a previously unaffiliated business entity
         that, to the knowledge of the Investor or Parent after reasonable
         inquiry (which inquiry shall be satisfied by the receipt of a written
         representation to such effect from the to-be-acquired business entity),
         owns shares of Voting Securities that represent less than 5% of the
         Company's outstanding Voting Securities; or (iv) the acquisition of the
         LLC

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         Conversion Shares, provided, that all such Voting Securities shall be
         subject to the terms of this Agreement; provided, further, that in the
         event a transaction contemplated by clause (iii) hereof, causes the
         Investor Group's Voting Ownership Percentage to exceed the Ownership
         Cap, the Investor will use reasonable best efforts to transfer, or
         cause such Affiliate to transfer, within twelve months following the
         consummation of such transaction and in a manner consistent with
         Section 3.5, such number of Voting Securities previously owned by the
         unaffiliated entity, so as to reduce the Voting Ownership Percentage of
         the Investor Group to no more than the Ownership Cap, and the Investor
         or such Affiliate will cause all such Voting Securities, pending their
         transfer, to be voted in accordance with the requirements of Section
         3.2 below;

                                    SECTION 2
                                  MISCELLANEOUS

         Section 2.1. Limitation of Amendment. Except for the amendments
expressly set forth above, the Original Agreement shall remain unchanged and in
full force and effect.

         Section 2.2. Incorporation of Provisions. The provisions of Section 6
of the Original Agreement shall apply to this Amendment as if set forth herein
in their entirety.

                  [Remainder of page intentionally left blank.]

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         IN WITNESS WHEREOF, this Amendment has been executed on behalf of the
parties hereto by their respective duly authorized officers, all as of the date
first above written.

                               NORTEL NETWORKS LLC

                               By:      /s/ Craig A. Johnson
                                        ---------------------------------------
                                        Name:
                                        Title:

                               NORTEL NETWORKS INC.

                               By:      /s/ Craig A. Johnson
                                        ---------------------------------------
                                        Name:
                                        Title:

                               ARRIS GROUP, INC.
                               f/k/a Broadband Parent Corporation

                               By:      /s/ Lawrence A. Margolis
                                        ---------------------------------------
                                        Name:
                                        Title:

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