| Business | Phone |
| Prime Link Telecom Ltd 331 2nd St E, Cornwall K6H 1Y8 | (613) 932-5912 |
| Seaway Telecom 36 2nd St E, Cornwall K6H 1Y3 | (613) 937-3036 |
| Smiston Communications 950 Boundary Rd, Cornwall | (613) 930-9187 |
| Csci 950 Boundary Rd Rr 1, Cornwall K6H 5R5 | (613) 930-9431 |