| Business | Phone |
| Guytel Services Inc 214 Bank St, Ottawa K2P 1X1 | (613) 232-1611 |
| Lexsys Network Inc 1050 Baxter Rd #6a, Ottawa K2C 3P1 | (613) 521-3734 |
| Mediascan Canada Inc 222 Laurier Ave E #2, Ottawa K1N 6P2 | (613) 238-3856 |
| Minitel Communications Corp 1775 Courtwood Cres, Ottawa K2C 3J2 | (613) 224-8000 |
| Multinet Communications 2285 St Laurent Blvd, Ottawa K1G 6C5 | (613) 738-9149 |
| Nortel Networks 255 Albert St #800, Ottawa K1P 6A9 | (613) 763-2211 |
| Phone Clinic 214 Bank St, Ottawa K2P 1X1 | (613) 230-9811 |
| Time Icr Inc 1600 Laperriere Ave, Ottawa K1Z 8P5 | (613) 798-1501 |
| Tele Marv Svc 10 Woodbury Cres, Ottawa K1G 5C4 | (613) 248-0859 |
| Centrepoint Technologies Inc 1545 Carling Ave #510, Ottawa K1Z 8P9 | (613) 725-2980 |
| Christie & Walther Telecom 570 Industrial Ave, Ottawa K1G 0Y9 | (613) 248-5600 |
| Cohm Technologies 1343 Wellington St, Ottawa K1Y 3B8 | (613) 729-3099 |
| Delphi Solutions Inc 1545 Carling Ave #102, Ottawa K1Z 8P9 | (613) 725-5002 |