| Business | Phone |
| Aae Svc 906 Wilson Ave, North York M3K 1E7 | (416) 630-3873 |
| Active Communications 111 Railside Rd #300, North York M3A 1B2 | (416) 447-3676 |
| Aritel Communications Ltd 265 Rimrock Rd, North York M3J 3C6 | (416) 661-3905 |
| Hi-Tech-C 111 Railside Rd #300, North York M3A 1B2 | (416) 444-5265 |
| Hong Kong Comms Ind Co Ltd 801 York Mills Rd, North York M3B 1X7 | (416) 449-4099 |
| Integrated Connections Consltg 31 Avondale Ave #401, North York M2N 7C1 | (416) 996-9472 |
| Norstan Canada Inc 2225 Sheppard Ave E #1600, North York M2J 5C2 | (416) 490-9500 |
| North American Telephone Co 4610 Dufferin St #23, North York M3H 5S4 | (416) 661-5112 |
| Balcom Systems Ltd 1805 Wilson Ave, North York M9M 1A2 | (416) 742-4111 |
| Bci Networks 1805 Wilson Ave, North York M9M 1A2 | (416) 742-9332 |
| Telbit 4610 Dufferin St #23, North York M3H 5S4 | (416) 661-9300 |
| Telephone Plus 2901 Steeles Ave W #30, North York M3J 3A5 | (416) 665-7700 |
| Telcom Equipement Systems 127 Sunrise Ave, North York M4A 1A9 | (416) 752-0909 |
| Telephone Clinic 16 Coldwater Rd, North York M3B 1Y7 | (416) 445-1220 |
| Telcom Technologies 401 Magnetic Dr, North York M3J 3H9 | (416) 663-3663 |
| Telecom Resource Corp 4610 Dufferin St #20b, North York M3H 5S4 | (416) 398-4448 |
| Telepacer Phone Systems 1802 Avenue Rd, North York M5M 3Z1 | (416) 781-3900 |
| Bts Canada 590 Champagne Dr, North York M3J 2T9 | (416) 636-3606 |
| Call Center Products 120 Armour Blvd, North York M3H 1L9 | (416) 631-6700 |
| Call Pro Canada 1220 Sheppard Ave E #300, North York M2K 2S5 | (416) 718-3456 |
| Clareville Communication Systs 38 Clareville Cres, North York M2J 2C1 | (416) 497-2404 |
| Dominion Telephone Systems Ltd 173 Dunblaine Ave, North York M5M 2S6 | (416) 780-1511 |