| Business | Phone |
| Nutech Communications 3835 W 9th St, Waterloo 50702 | (319) 234-5612 |
| Total Choice Comm Inc 100 E Park St, Waterloo 66061 | (913) 390-1999 |
| Communications Systems Of Iowa 200 W 4th St, Waterloo 50701 | (319) 236-1555 |
| Dynamic Communications 800 Jefferson St, Waterloo 50701 | (319) 232-1535 |