| Business | Phone |
| Alliance Consulting Group 15303 Dallas Pkwy, Addison 75001 | (972) 560-2832 |
| Bechtel Corp 4570 Westgrove Dr, Addison 75001 | (972) 407-1062 |
| Longhorn Communications 4287 Belt Line Rd A, Addison 75001 | (972) 248-4323 |
| Varros Telecom 15928 Midway Rd, Addison 75001 | (972) 503-8884 |