EXHIBIT A TO SCHEDULE 13D/A AGREEMENT OF JOINT FILING
EXHIBIT A TO SCHEDULE 13D/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 10, 2002 | ||||||
| COLUMBIA CAPITAL EQUITY PARTNERS III (QP), L.P. | ||||||
| By: | Columbia Capital Equity Partners III, L.P. its general partner |
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| By: | Columbia Capital III, L.L.C. its general partner |
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| By: | /s/ Xxxxxx X. Xxxxxxx | |||||
| Xxxxxx X. Xxxxxxx Chief Financial Officer |
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| COLUMBIA CAPITAL EQUITY PARTNERS II (QP), L.P. | ||||||
| By: | Columbia Capital Equity Partners, L.L.C. its general partner |
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| By: | /s/ Xxxxxx X. Xxxxxxx | |||||
| Xxxxxx X. Xxxxxxx Chief Financial Officer |
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| COLUMBIA CARDINAL PARTNERS, L.L.C. | ||||||
| By: | Columbia Capital, L.L.C. Managing Member |
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| By: | /s/ Xxxxxx X. Xxxxxxx | |||||
| Xxxxxx X. Xxxxxxx Chief Financial Officer |
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| COLUMBIA BROADSLATE PARTNERS, L.L.C. | ||||||
| By: | Columbia Capital III, L.L.C. Managing Member |
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| By: | /s/ Xxxxxx X. Xxxxxxx | |||||
| Xxxxxx X. Xxxxxxx Chief Financial Officer |
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| COLUMBIA CAPITAL EQUITY PARTNERS III (AI), L.P. | ||||||
| By: | Columbia Capital Equity Partners III, L.P. its general partner |
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| By: | Columbia Capital III, L.L.C. its general partner |
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| By: | /s/ Xxxxxx X. Xxxxxxx | |||||
| Xxxxxx X. Xxxxxxx Chief Financial Officer |
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| COLUMBIA CAPITAL EQUITY PARTNERS, L.P. | ||||||
| By: | /s/ Xxxxxx X. Xxxxxxx | |||||
| Xxxxxx X. Xxxxxxx Chief Financial Officer |
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| COLUMBIA CAPITAL EQUITY PARTNERS III, L.P. | ||||||
| Columbia Capital III, L.L.C. its general partner |
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| By: | /s/ Xxxxxx X. Xxxxxxx | |||||
| Xxxxxx X. Xxxxxxx Chief Financial Officer |
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| COLUMBIA CAPITAL III, L.L.C. | ||||||
| By: | /s/ Xxxxxx X. Xxxxxxx | |||||
| Xxxxxx X. Xxxxxxx Chief Financial Officer |
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| COLUMBIA CAPITAL EQUITY PARTNERS, L.L.C. | ||||||
| By: | /s/ Xxxxxx X. Xxxxxxx | |||||
| Xxxxxx X. Xxxxxxx Chief Financial Officer |
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| COLUMBIA CAPITAL EQUITY PARTNERS II (CAYMAN), L.P. | ||||||
| By: | Columbia Capital Equity Partners, L.L.C., its general partner |
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| By: | /s/ Xxxxxx X. Xxxxxxx | |||||
| Xxxxxx X. Xxxxxxx Chief Financial Officer |
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| COLUMBIA CAPITAL EQUITY PARTNERS II, L.P. | ||||||
| By: | Columbia Capital Equity Partners, L.L.C., its general partner |
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| By: | /s/ Xxxxxx X. Xxxxxxx | |||||
| Xxxxxx X. Xxxxxxx Chief Financial Officer |
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| COLUMBIA CAPITAL INVESTORS, L.L.C. | ||||||
| By: | Columbia Capital, L.L.C., its Manager | |||||
| By: | /s/ Xxxxxx X. Xxxxxxx | |||||
| Xxxxxx X. Xxxxxxx Chief Financial Officer |
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| COLUMBIA CAPITAL EQUITY PARTNERS III (CAYMAN), L.P. | ||||||
| By: | Columbia Capital Equity Partners III, (Cayman), Ltd., its general partner |
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| By: | Columbia Capital Equity Partners III, L.P., its sole shareholder |
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| By: | Columbia Capital III, L.L.C. its general partner |
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| By: | /s/ Xxxxxx X. Xxxxxxx | |||||
| Xxxxxx X. Xxxxxxx Chief Financial Officer |
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| COLUMBIA CAPITAL INVESTORS III, L.L.C. | ||||||
| By: | Columbia Capital III, L.L.C. its Manager |
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| By: | /s/ Xxxxxx X. Xxxxxxx | |||||
| Xxxxxx X. Xxxxxxx Chief Financial Officer |
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| COLUMBIA CAPITAL, L.L.C. | ||||||
| By: | /s/ Xxxxxx X. Xxxxxxx | |||||
| Xxxxxx X. Xxxxxxx Chief Financial Officer |
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| /s/ Xxxxx X. Xxxxxx, III | ||||||
| Xxxxx X. Xxxxxx, III | ||||||
| /s/ R. Xxxxxx Xxxxxx, III | ||||||
| R. Xxxxxx Xxxxxx, III | ||||||
| /s/ Xxxxx X. Xxxxxxx, Xx. | ||||||
| Xxxxx X. Xxxxxxx, Xx. | ||||||
