Document:

<PAGE>   1

                                                                Exhibit 10.14.1

[TRITON NETWORK SYSTEMS, INC. LOGO]

July 20, 1999

Mr. Douglas R.B. Campbell
5961 Masters Blvd., Bay Hill
Orlando, FL 32819

Dear Doug:

         In consideration of your further employment with the Company, we are
proposing the following Amendment to your Employment Offer letter dated December
18, 1999.

          POSITION & TITLE:

          Your new position in the Company will be Vice President, Sales &
Marketing reporting to the Chief Executive Officer.

          SEVERANCE PACKAGE:

          The Company will provide you with a severance package in the event you
are terminated without cause. Without cause shall mean for any reason other
than:

          1. Illegal acts (other than minor traffic violations or misdemeanors),
             including but not limited to theft or embezzlement.

          2. Violation of published written policies of the Company or violation
             of any confidentiality or proprietary information agreement with
             the Company.

          3. Irresponsible unauthorized acts of a willful nature in the
             performance of duties or repeated failure to follow the reasonable
             directions of the Board of Directors or Officers of the Company.

         The severance package will provide you with up to six (6) months base
salary, twenty-five percent (25%) of your annual bonus, and benefit continuance
from the time of your involuntary termination for a six (6) month period. If you
are employed within six (6) months of your termination from the Company, your
severance payments will stop at the time of your new employment. You will
continue to vest your stock options during your severance period which may be up
to six (6) months. If your employment is terminated without cause because of, or
within one (1) year after, a sale of the Company, you will receive six (6)
months compensation (bass salary and bonus), plus six (6) months benefit
continuance.

                                                                          Page 1
<PAGE>   2

         Should you be terminated, without cause, within your first year of
employment, the minimum continued vesting period will be the number of months
required to obtain one year of vesting.

         NON-DISPARAGEMENT:

         You agree that should your employment with the Company terminate for
any reason, you will not disparage the Company, which includes, but is not
limited to, making negative comments about the Company, its products, its
employees, Officers, or Board of Directors, or your employment with the Company.
In addition, should your employment with the Company terminate for any reason,
the Company agrees to not disparage you.

         NON-SOLICITATION:

         You agree that for six (6) months following the your employment with
the Company, whether the termination shall be voluntary or involuntary, with or
without cause, or for any other reason whatsoever, you shall not, directly or
indirectly or on behalf of yourself or any other person or entity: (a) attempt
to hire any other employee of the Company or otherwise encourage or attempt to
encourage any other employee of the Company to leave employment with the
Company; or (b) in any manner or at any time, solicit or encourage or discuss
with any person, firm, corporation, or any business entity who are Customer of
the Company and/or other employees of the Company to cease doing business with
the Company and/or other employees of the Company. In the event you breach any
term contained in this Section, you immediately waive any right or entitlement
to the Severance Benefits described in the Employment Severance Agreement and
will pay to the Company an amount equal to any portion of the Severance Benefits
paid to you prior to your breach, in addition to any damages the Company may be
able to recover.

         If you are in agreement with the terms of this Amendment, please sign
and date below.

                                               Sincerely

                                               /s/ Brian J. Andrew
                                               -----------------------
                                               Brian J. Andrew

I accept the terms of this amendment to my offer of employment

/s/   DRB Campbell
-----------------------
Name  DRB Campbell

       18 Oct 99
-----------------------
Date

Confidential                                                              Page 2<PAGE>   1
February 27, 1997                                             Exhibit 10.15

Michael Clark
1315 Black Oak
Carrollton, TX 75007

Dear Mike

It is with pleasure that Milcom, Inc. for Triton Network Systems, Inc. extends
to you an offer of employment as the Vice President of Engineering. You will be
reporting to Brian Andrew and your work location will be in Orlando, Florida.
The following is designed to serve as a record of the essential terms of your
employment, which supersedes all prior discussions:

Commencement of employment: April 1, 1997

Remuneration:  Your base salary will be $125,000 per annum payable semi-monthly
               in arrears. With a 20% end of year bonus based on completion of
               personal and corporate objectives.

Stock options: As a member of the Triton startup team, you will receive earned
               equity in the form of stock options totaling 2% of total company
               stock. Your options will vest based on the following formula:

               - One third at start of employment

               - One third after three years of continuous employment

               - One third based on successful completion of agreed individual
                  objectives over three years.

Relocation:    Triton will cover up to $30,000 worth of documented relocation
               costs associated with your move to Orlando, Florida.

Vacation:      Vacation is on a calendar year basis, and accrues on a monthly
               basis. For the first three years of employment, the rate of
               accrual shall be 10 hours per month (three weeks per year). After
               three years of continuous employment with Triton, your vacation
               entitlement will increase to 13.3 hours per month (four weeks per
               year).

Benefits:      Triton will provide the following paid benefits, at its sole
               discretion:

               Medical Insurance         Disability Insurance
               Life Insurance            Dental Insurance
               401(K) Plan Eligibility   Tuition Reimbursement
<PAGE>   2
                                      -2-
                                                                   March 1, 1997

         In the interim, Milcom, Inc. will cover the cost of your current
         coverage within the COBRA program as offered by your current employer
         upon termination with them.

Please sign and return the offer letter to me on or before 5:00 PM EST Friday,
March 7, 1997.

I am delighted that you are joining the Triton team and look forward to
assisting you in achieving your professional objectives. I believe that you
will enjoy working here and find it to be a professionally satisfying
experience. Please let me know if you have any questions about your employment
at Triton or if there is any other information or material I can provide for
you.

Sincerely,

/s/ BRIAN J. ANDREW
-------------------
Brian J. Andrew
President & CEO Triton Network Systems, Inc.

/s/ ANDY BADOLATO
------------------
Andy Badolato
President, Milcom, Inc.

                                             Accepted:

                                             Signature: Michael A. Clark
                                                        -----------------
                                             Name:  Michael A. Clark
                                                   ----------------------
                                             Date:  3/1/97
                                                   ----------------------<PAGE>   1

                                                                Exhibit 10.15.1

July 20, 1999

Mr. Michael A. Clark
8514 Fulton Court
Oriando,FL 32835

Dear Mike:

         In consideration of your further employment with the Company, we are
proposing the following Amendment to your Employment Offer letter dated
February 27, 1997.

         SEVERANCE PACKAGE:

         The Company will provide you With a severance package in the event you
are terminated without cause. Without cause shall mean for any reason other
than:

         1.       Illegal acts (other than minor traffic violations or
                  misdemeanors), including but not limited to theft or
                  embezzlement.

         2.       Violation of published written policies of the Company or
                  violation of any confidentiality or proprietary information
                  agreement with the Company.

         3.       Irresponsible unauthorized acts of a willful nature in the
                  performance of duties or repeated failure to follow the
                  reasonable directions of the Board of Directors or Officers,
                  of the Company.

         The severance package will provide you with up to six (6) months bass
salary, twenty-five percent (25%) of your annual bonus, and benefit continuance
from the time of your involuntary termination for a six (6) month period. If
you are employed within six (6) months of your termination from the Company,
your severance payments Will stop at the time of your new employment. You will
continue to vest your stock options during your severance period which may be
up to six (6) months. If your employment is terminated without cause because
of, or within one (1) year after, a sale of the Company, you Will receive six
(6) months compensation (base salary and bonus), plus six (6) months benefit
continuance.

Confidential                                                          Page 1
<PAGE>   2

         NON-DISPARAGEMENT

         You agree that should your employment with the Company terminate for
any reason, you WILL not disparage the Company, which includes, but is not
limited to, making negative comments about the Company, its products, its
employees, Officers, or Board of Directors, or your employment with the
Company. In addition, should your employment with the Company terminate for any
reason, the Company agrees to not disparage you.

         NON-SOLICITATION:

         You agree that for six (6) months following the your employment with
the Company, whether the termination shall be voluntary or involuntary, with or
without cause, or for any other reason whatsoever, you shall not, directly or
indirectly or on behalf of yourself or any other person or entity: (a) attempt
to hire any other employee of the Company or otherwise encourage or attempt to
encourage any other employee of the Company to leave employment with the
Company; or (b) in any manner or at any time, solicit or encourage or discuss
with any person, firm, corporation, or any business entity who are Customer of
the Company and/or other employees of the Company to cease doing business with
the Company and/or other employees of the Company. In the event you breach any
term contained in this Section, you immediately waive any right or entitlement
to the Severance Benefits described in the Employment Severance Agreement and
will pay to the Company an amount equal to any portion of the Severance
Benefits paid to you prior to your breach, in addition to any damages the
Company may be able to recover.

         If you are in agreement With the terms of this Amendment, please sign
and date below.

                                       Sincerely,

                                       /s/ Brian J. Andrew
                                       ----------------------------------------
                                           Brian J. Andrew

I accept the terms of this amendment to my offer of employment.

  /s/ Michael A. Clark
-----------------------------------
Name: Michael A. Clark

           8/2/99
-----------------------------------
Date

Confidential                                                          Page 2

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00002-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00002-of-00352.parquet"}], [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00002-of-00352.parquet"}]]