- Mitel Business Communications Solutions
- Algo Communication Products Ltd
- Source Telecommunications Inc
- Canwest Telephone Company Corp
- Telephony Managed Solutions Inc
- Megalink Telecom & Data
- Telecom Canada
- Tele-Direct (Publications) Inc
- Bell Canada 中文热线
- Sprint Canada中文热线
- Tele - Connex
- Telus
- All Stream