| Business | Phone |
| All Pro Communications 3535 Plainfield Ave Ne, Grand Rapids 49525 | (616) 363-1660 |
| All-Tronics Inc 4980 Kendrick St Se, Grand Rapids 49512 | (616) 949-0900 |
| Ask-A-Tec 3551 Lake Michigan Dr Nw, Grand Rapids 49534 | (616) 453-2004 |
| Automated Telecom Inc 660 Cascade West Pkwy Se 55, Grand Rapids 49546 | (616) 942-8267 |
| Broadband Telephony Systems 333 Bridge St Nw, Grand Rapids 49504 | (616) 336-9656 |
| Business Solutions Network 2450 Gilmour St Se, Grand Rapids 49506 | (616) 988-0696 |
| Control Communications Corp 6115 28th St Se, Grand Rapids 49546 | (616) 942-0600 |
| Converged Solutions 2525 E Paris Ave Se, Grand Rapids 49546 | (616) 975-0185 |
| A A Net Group Llc 211 Logan St Sw, Grand Rapids 49503 | (616) 235-3333 |
| Electromedia 3923 28th St Se, Grand Rapids 49512 | (616) 514-0000 |
| First Telecommunications Llc 3663 Broadmoor Ave Se, Grand Rapids 49512 | (616) 942-7500 |
| Gee Communications Inc 3224 28th St Se, Grand Rapids 49512 | (616) 464-5719 |
| Grand Rapids Telecommunication 601 Emerald Ave Ne 2, Grand Rapids 49503 | (616) 459-9000 |
| Voice Data Systems 620 Century Ave Sw 200, Grand Rapids 49503 | (616) 643-4500 |
| West Michigan Communications 1929 Stanford Dr Se, Grand Rapids 49508 | (616) 455-5042 |
| Van Belkum Voice & Data Svc 535 Cascade W Pkwy Se, Grand Rapids 49546 | (616) 974-8200 |
| Ottawa Communications 3653 Grand Bluffs Ct Sw, Grand Rapids 49534 | (616) 453-0021 |
| Moss Telecommunications Svc 561 Century Ave Sw, Grand Rapids 49503 | (616) 451-9933 |
| Matsch Systems 911 Division Ave N, Grand Rapids 49503 | (616) 459-0782 |