| Business | Phone |
| Affton Telecom Inc 8821 Gravois Rd, St Louis 63123 | (314) 351-7900 |
| Vo-Data Solutions Inc 5714 S Lindbergh Blvd, St Louis 63123 | (314) 849-5005 |
| Voice Engineering & Supply 901 Twin Pine Dr, St Louis 63131 | (314) 965-0200 |
| Stl-Ntr Svc 2030 Altom Ct, St Louis 63146 | (314) 301-4600 |
| Sunturn Inc 711 Old Ballas Rd, St Louis 63141 | (314) 872-9530 |
| Source Midwest 11960 Westline Industrial #331, St Louis 63146 | (314) 317-8400 |
| Southwestern Bell Telecom 1000 Des Peres Rd, St Louis 63131 | (314) 822-6800 |
| Schweiss Networks Inc 2359 Schuetz Rd, St Louis 63146 | (314) 989-9350 |
| Ntr 2030 Altom Ct, St Louis 63146 | (314) 301-4687 |
| Midwest Telecom Resellers 1288 Research Blvd, St Louis 63132 | (314) 785-6009 |
| Metropark Communications Inc 10405 Baur Blvd # A, St Louis 63132 | (314) 439-1900 |
| Mastor Telecom Equipment Inc 2359 Schuetz Rd, St Louis 63146 | (314) 993-2324 |
| Ideacom Midwest Inc 1337 Hanley Industrial Ct, St Louis 63144 | (314) 961-0557 |
| Custom Headsets Of St Louis St Louis 63118 | (314) 771-8088 |
| Cannon Electronics Inc 4150 Crescent Dr, St Louis 63129 | (314) 892-0000 |
| Concord Communications 10777 Sunset Office Dr, St Louis 63127 | (314) 965-4900 |
| Csi Telecommunications Inc 7935 Clayton Rd, St Louis 63117 | (314) 725-5643 |