| Business | Phone |
| Inter-Tel Technologies Inc 9440 Atlantic Dr Sw 2, Cedar Rapids 52404 | (319) 247-5200 |
| Fiberutility Of Iowa 3053 Center Point Rd Ne, Cedar Rapids 52402 | (319) 364-3200 |
| Global Communications 1930 Saint Andrews Ct Ne, Cedar Rapids 52402 | (319) 393-0448 |