| Business | Phone |
| A T & T Canada Corp 625 Rue Belmont, Montreal H3B 2M1 | (514) 940-5678 |
| Hi-Tel Hi Data 1085 Cote Du Beaver Hall #200, Montreal H2Z 1S5 | (514) 393-4131 |
| B V Communications 950 Av Ogilvy, Montreal H3N 1P4 | (514) 272-8018 |
| Bell Canada 1800 Av Mcgill College #901, Montreal H3A 3J6 | (514) 870-1511 |
| Systemes Numeriques Virtuels 1155 Rue University, Montreal H3B 3A7 | (514) 847-0155 |
| Telesystem International Wrlss 1000 De La Gauchetiere St W, Montreal H3B 4W5 | (514) 673-8497 |
| Videotron Telecom Ltd 800 Boul De Maisonneuve E, Montreal H2L 4L8 | (514) 380-4666 |
| Communication Telo Systeme 740 Rue Notre-Dame O #1135, Montreal H3C 3X6 | (514) 877-3100 |
| Expert Cellulaire 1019 Rue Clark, Montreal H2Z 1K1 | (514) 390-0016 |