| Name : | Communication Concepts |
| Address : | 551 Belt Line Road |
| City : | Collinsville |
| State : | Illinois |
| Zip : | 62234 |
| Phone : | (618)344-7930 |
| Name : | D M R Associates |
| Address : | 9525 Collinsville Road |
| City : | Collinsville |
| State : | Illinois |
| Zip : | 62234 |
| Phone : | (618)344-7272 |
| Name : | Gateway Telephone Systems |
| Address : | 1993 Vandalia Street |
| City : | Collinsville |
| State : | Illinois |
| Zip : | 62234 |
| Phone : | (618)344-7147 |