| Business | Phone |
| Phonetel Patent Svc 512 Main St 601, Fort Worth 76102 | (817) 338-0004 |
| Telecom Single Point-Contact 3412 Brown Ave, Fort Worth 76111 | (817) 732-3838 |
| Telecommunication Systems-Tx 5521 Club House Dr, Fort Worth 76148 | (817) 656-2846 |
| Alliance Telecommunications 8508 Choctaw Trl, Fort Worth 76116 | (817) 560-4199 |