| Business | Phone |
| Arch Communications 339 Bevan Dr, Burlington L7L 4L3 | (905) 637-9960 |
| Inside Wire 111 Prince Charles Dr, Burlington | (905) 331-5050 |
| Inside Wire 5118 Tree Crt, Burlington L7L 6K3 | (905) 842-6151 |
| Modular Telephone Interface 4180 Morris Dr, Burlington L7L 5L6 | (905) 319-7410 |
| Nor Direct Communications 1254 Tyrrell Rd, Burlington L7P 2S1 | (905) 332-5228 |
| Quest Communications 3513 Marion Crt, Burlington L7M 3E7 | (905) 335-0451 |
| Branttel Networks 3190 Harvester Rd, Burlington L7N 3T1 | (905) 632-2000 |