| SIGMA                  OPPORTUNITY FUND, LLC800                  Third AvenueSuite                  1701New                  York, New York 10022 |                          | SIGMA                  BERLINER LLC800                  Third AvenueSuite                  1701New                  York, New York 10022 |
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|                                                                                                                                              | May                  14, 2007 |                                                                                                                                     |

| In                  Re: | 7%                  Senior Subordinated Secured Convertible Notes Due 2008 issued to                  Sigma                  Opportunity Fund, LLC (“Sigma”) in the original principal amount of                  $3,000,000 (the “Sigma Note”); Sigma Berliner LLC (“SBLLC”) in the                  original principal amount of $1,500,000 (the “SBLLC Note”); Pacific Asset                  Partners (“Pacific”) in the original principal amount of $1,000,000; and                  to Operis Partners I LLC (“Operis”) in the original principal amount of                  $500,000 (collectively the notes issued to Pacific and Operis shall                  be                  referred to as the “Other Notes” and the Sigma Note, the SBLLC Note and                  the Other Notes shall be, collectively, the “Notes”). |
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|      **AGREED                  AND ACCEPTED:**                                                                                                                                                                                                                                                                                         |   | Very                  truly yours, SIGMA                  OPPORTUNITY FUND, LLCBy:                  Sigma Capital Advisors, LLC By: /s/                  Thom Waye      Name:                  Thom WayeTitle:                  Manager  |
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| BERLINER                  COMMUNICATIONS, INC. By: /s/                  Rich Berliner      Rich                  Berliner, President  BCI                  COMMUNICATIONS, INC. By: /s/                  Rich Berliner      Rich                  Berliner, President |   | SIGMA                  BERLINER LLCBy:                  Sigma Capital Advisors, LLC By: /s/                  Thom Waye      Name:                  Thom WayeTitle:                  Manager                                                        |

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