| Business | Phone |
| Communications Technology Corp 1417 Upfield Dr, Carrollton 75006 | (972) 245-0093 |
| Ixc Communications 2155 Chenault Dr, Carrollton 75006 | (972) 478-7229 |
| Mercury Telecommunications 1817 Tree Line Dr, Carrollton 75007 | (972) 939-9350 |
| Pyramid Communications Svc Inc 20009 Mckenzie Dr 130, Carrollton 75006 | (432) 570-7342 |