| Business | Phone |
| Gibson Teldata 1472 Wabash Ave, Terre Haute 47807 | (812) 232-6287 |
| Gibson Teldata 1717 S 3rd St, Terre Haute 47802 | (812) 235-2800 |
| Mts Digital 248 S 7th St, Terre Haute 47807 | (812) 232-1443 |
| My Tek Inc 1508 Crawford St, Terre Haute 47807 | (812) 478-3811 |
| Necom Po Box 5232, Terre Haute 47805 | (812) 466-2585 |
| Innovative Communication 1931 N 3rd St, Terre Haute 47804 | (812) 243-1548 |
| Microtel Information Systems 1222 Lafayette Ave, Terre Haute 47804 | (812) 234-1199 |