| Business | Phone |
| Dimension Electronics Inc 4031 Dayton Xenia Rd, Dayton 45432 | (937) 426-9520 |
| General Dynamics Corp 4130 Linden Ave, Dayton 45432 | (937) 427-6070 |
| Prestige Teleph Communications 4221 Straight Arrow Rd, Dayton 45430 | (937) 237-7777 |
| Avaya Inc 727 Congress Park Dr, Dayton 45459 | (937) 438-8660 |
| Buckeye Information Systems 8535 N Dixie Dr # A, Dayton 45414 | (937) 461-2500 |
| Daytel Communications Inc 610 E 5th St, Dayton 45402 | (937) 461-2100 |
| Dvd Communications Dayton 45429 | (937) 623-3751 |
| Telecom Products Corp Dayton 45402 | (937) 226-4700 |
| Telecommunications Service Grp 6052 Wilmington Pike, Dayton 45459 | (937) 274-1778 |
| Tom's Telephone Svc 941 Donson Dr, Dayton 45429 | (937) 436-1100 |
| Ideacom Dayton Inc 1940 W Dorothy Ln, Dayton 45439 | (937) 294-5900 |
| Insta-Info Inc 7332 W Von Dette Cir, Dayton 45459 | (937) 439-0064 |
| Reliable Communications Inc 2601 Stanley Ave, Dayton 45404 | (937) 224-3445 |
| Marr Telecommunications 4232 Taylorsville Rd, Dayton 45424 | (937) 433-8320 |