| Business | Phone |
| Natural Convergence 1309 Carling Ave, Ottawa K1Z 7L3 | (613) 725-2030 |
| Zhone Technologies Inc 1565 Carling Ave #200, Ottawa K1Z 8R1 | (613) 722-4332 |
| Corning Photonic Technologies 377 Third Ave, Ottawa K1S 2K4 | (613) 236-5409 |
| Eci Telecom Inc 1565 Carling Ave, Ottawa K1Z 8R1 | (613) 566-7009 |
| Clic Instruments Ltd 2630 Lancaster Rd #A, Ottawa K1B 5L8 | (613) 731-9030 |
| Comtest Instruments Ltd 1 Raymond St, Ottawa K1R 1A2 | (613) 226-2301 |