| Business | Phone |
| Htis Inc 6001 Stonington St 196, Houston 77040 | (713) 462-0977 |
| Telephone Systems Spec 7322 Southwest Fwy, Houston 77074 | (713) 772-4343 |
| B D Solutions 10811 Bissonnet St 4, Houston 77099 | (713) 272-7199 |
| World Wide Telecommunications 10665 Richmond Ave, Houston 77042 | (713) 977-5151 |
| Am-Pm Telephone Svc Po Box 420484, Houston 77242 | (713) 738-4117 |
| Professional Phone Management Po Box 840521, Houston 77284 | (281) 463-7414 |
| Alliance Communications Houston 77041 | (713) 983-6844 |
| Allways Technology Inc 7400 Harwin Dr 228, Houston 77036 | (713) 266-8689 |
| Comanche Telephone Svc Houston 77009 | (713) 412-9340 |
| Cope 9051 Park West Dr, Houston 77063 | (713) 952-3774 |
| Datacom Technology Svc 6363 Richmond Ave, Houston 77057 | (713) 464-5329 |
| Dectel Communications 9219 Katy Fwy 179, Houston 77024 | (713) 827-0722 |
| Discount Telephone Co 3105 Edgewood, Houston 77072 | (281) 798-4928 |
| Ernie's Pre-Wire & Repair Co 2618 Shadow Briar Ln, Houston 77073 | (281) 821-1919 |
| Fitt Telecommunications Svc 11301 Oak Spring Dr, Houston 77043 | (281) 497-8181 |
| Harry B The Telephone Man Houston 77038 | (281) 448-2353 |
| Interconnect Co 7400 Rampart St A2, Houston 77081 | (713) 777-0945 |
| J Bell Comms 1313 Curtin St, Houston 77018 | (713) 682-7005 |
| J C Wiring Communications Houston 77002 | (832) 731-3494 |
| Jacks Telewiring 7902 Kendalia Dr, Houston 77036 | (713) 410-3080 |
| Houston Network Cabling 945 Mckinney #527, Houston 77002 | (832) 431-4292 |