| Business | Phone |
| Hydro One Telecom Inc 483 Bay St #1300, Toronto M5G 2C9 | (416) 345-6820 |
| Crosstel Communications 222 Spadina Ave, Toronto M5T 2C2 | (416) 979-0808 |
| Ldc Long Distance Inc 454a Yonge St #7, Toronto M4Y 1W9 | (416) 966-2266 |
| Telehop Communications Inc 674 Briar Hill Ave, Toronto M6B 1L3 | (905) 729-0709 |
| Telcoplus Enterprises Inc 6 Clarendon Cres, Toronto M4V 2P4 | (416) 413-9228 |
| Call-Tel Inc 34 Southport St #203, Toronto M6S 3N3 | (416) 762-9422 |
| Canopco Inc 40 University Ave, Toronto M5J 1T1 | (416) 640-1088 |
| Canop Co Teleconferencing 40 University Ave, Toronto M5J 1T1 | (416) 971-5360 |