| Business | Phone |
| Bounce Communications Richardson 75080 | (972) 234-1550 |
| Cci Communications 990 N Bowser Rd 900, Richardson 75081 | (972) 590-1005 |
| Com Tek Communications 401 S Sherman St, Richardson 75081 | (214) 615-7092 |
| Communication Management Svc 701 Presidential Dr, Richardson 75081 | (972) 437-5018 |
| Flex Solv Inc 1701 N Greenville Ave, Richardson 75081 | (972) 889-3539 |
| I P Communications 200 E Tyler St, Richardson 75081 | (972) 470-5834 |
| Premiere Conferencing 918 Lakeview Dr, Richardson 75080 | (972) 437-1382 |
| William W Robertson 39 Crown Pl, Richardson 75080 | (972) 671-0048 |
| Symon Co 1358 Exchange Dr, Richardson 75081 | (972) 437-6020 |
| Austin Info Systems Inc 3311 E Renner Rd # 100, Richardson 75082 | (972) 424-7740 |
| Boeing Co 3373 Breckinridge Blvd, Richardson 75082 | (972) 705-8000 |
| Vrc 1750 N Collins Blvd, Richardson 75080 | (214) 664-9898 |