EXHIBIT A AGREEMENT OF JOINT FILING Pursuant to Rule 13d-1(k)(1), we, the undersigned, hereby agree that the attached Schedule 13D is filed on behalf of each of us. Dated: January 7, 2002 COLUMBIA CAPITAL EQUITY PARTNERS III (QP), L.P.
EXHIBIT A
AGREEMENT OF JOINT FILING
Pursuant to Rule 13d-1(k)(1), we, the undersigned, hereby agree that the
attached Schedule 13D is filed on behalf of each of us.
Dated: January 7, 2002
COLUMBIA CAPITAL EQUITY PARTNERS III (QP), L.P.
By: Columbia Capital Equity Partners III, L.P.
its general partner
By: Columbia Capital III, LLC
its general partner
By: /s/ Xxxxxx X. Xxxxxxx
-------------------------------------------
Name: Xxxxxx X. Xxxxxxx
Chief Financial Officer
COLUMBIA CAPITAL EQUITY PARTNERS II (QP), L.P.
By: Columbia Capital Equity Partners, LLC
its general partner
By: /s/ Xxxxxx X. Xxxxxxx
-------------------------------------------
Name: Xxxxxx X. Xxxxxxx
Chief Financial Officer
COLUMBIA CARDINAL PARTNERS, LLC
By: Columbia Capital, L.L.C.
Managing Member
By: /s/ Xxxxxx X. Xxxxxxx
-------------------------------------------
Name: Xxxxxx X. Xxxxxxx
Chief Financial Officer
COLUMBIA BROADSLATE PARTNERS, LLC
By: Columbia Capital III, L.L.C.
Managing Member
By: /s/ Xxxxxx X. Xxxxxxx
-------------------------------------------
Name: Xxxxxx X. Xxxxxxx
Chief Financial Officer
Page 40 of 43 Pages
COLUMBIA CAPITAL EQUITY PARTNERS III (AI), L.P.
By: Columbia Capital Equity Partners III, L.P.
its general partner
By: Columbia Capital III, LLC
its general partner
By: /s/ Xxxxxx X. Xxxxxxx
-------------------------------------------
Name: Xxxxxx X. Xxxxxxx
Chief Financial Officer
COLUMBIA CAPITAL EQUITY PARTNERS III, L.P.
By: Columbia Capital III, LLC
its general partner
By: /s/ Xxxxxx X. Xxxxxxx
-------------------------------------------
Name: Xxxxxx X. Xxxxxxx
Chief Financial Officer
COLUMBIA CAPITAL III, LLC
By: /s/ Xxxxxx X. Xxxxxxx
-------------------------------------------
Name: Xxxxxx X. Xxxxxxx
Chief Financial Officer
COLUMBIA CAPITAL EQUITY PARTNERS, LLC
By: /s/ Xxxxxx X. Xxxxxxx
-------------------------------------------
Name: Xxxxxx X. Xxxxxxx
Chief Financial Officer
COLUMBIA CAPITAL, L.L.C.
By: /s/ Xxxxxx X. Xxxxxxx
-------------------------------------------
Name: Xxxxxx X. Xxxxxxx
Chief Financial Officer
/s/ Xxxxx X. Xxxxxx, III
-----------------------------------------------
Xxxxx X. Xxxxxx, III
/s/ R. Xxxxxx Xxxxxx, III
-----------------------------------------------
R. Xxxxxx Xxxxxx, III
/s/ Xxxxx X. Xxxxxxx
-----------------------------------------------
Xxxxx X. Xxxxxxx
Page 41 of 43 Pages
THE LAFAYETTE INVESTMENT FUND, L.P.
By: Lafayette Investment Partners, L.P.,
its sole general partner
By: Lafayette Private Equities, Inc.,
its sole general partner
By: /s/ Xxxxxx Xxxxxxx
---------------------------------------
Xxxxxx Xxxxxxx
Vice President
LAFAYETTE INVESTMENT PARTNERS, L.P.
By: Lafayette Private Equities, Inc.,
its sole general partner
By: /s/ Xxxxxx Xxxxxxx
--------------------------------------
Xxxxxx Xxxxxxx
Vice President
LAFAYETTE PRIVATE EQUITIES, INC.
By: /s/ Xxxxxx Xxxxxxx
-------------------------------------------
Xxxxxx Xxxxxxx
Vice President
XXXXXXX RIVER PARTNERSHIP X,
A LIMITED PARTNERSHIP
By: Xxxxxxx River X GP, LLC
General Partner
By: /s/ Xxxx Xxxxxx, Xx.
-------------------------------------------
Name: Xxxx Xxxxxx, Xx.
Title: General Partner
XXXXXXX RIVER PARTNERSHIP X-A,
A LIMITED PARTNERSHIP
By: Xxxxxxx River X GP, LLC,
General Partner
By: /s/ Xxxx Xxxxxx, Xx.
-------------------------------------------
Name: Xxxx Xxxxxx, Xx.
Title: General Partner
XXXXXXX RIVER FRIENDS X-B, LLC
By: Xxxxxxx River Friends, Inc.
Manager
By: /s/ Xxxx Xxxxxx, Xx.
-------------------------------------------
Name: Xxxx Xxxxxx, Xx.
Title: General Partner
Page 42 of 43 Pages
XXXXXXX RIVER FRIENDS X-C, LLC
By: Xxxxxxx River Friends, Inc.
Manager
By: /s/ Xxxx Xxxxxx, Xx.
--------------------------------------------
Name: Xxxx Xxxxxx, Xx.
Title: General Partner
XXXXXXX RIVER X GP, LLC
By: /s/ Xxxx Xxxxxx, Xx.
--------------------------------------------
Name: Xxxx Xxxxxx, Xx.
Title: General Partner
XXXXXXX RIVER FRIENDS, INC.
By: /s/ Xxxx Xxxxxx, Xx.
--------------------------------------------
Name: Xxxx Xxxxxx, Xx.
Title: General Partner
N.I.G. - BROADSLATE, LTD.
By: /s/ Xxxxxx Xxxxx
--------------------------------------------
Name: Xxxxxx Xxxxx
Title:Managing Director
Xxxxxx Xxxxx
------------------------------------------------
Xxxxxx Xxxxx
Page 43 of 43 Pages
