| Business | Phone |
| Dfw Dialtone 1219 Abrams, Irving 75061 | (972) 445-4920 |
| American Automated Telecom 1425 Greenway Dr, Irving 75038 | (972) 550-1520 |
| Ebby Halliday Realtors 7520 N Macarthur Blvd 100, Irving 75063 | (972) 409-3229 |
| Gte Business Phone Systems 8550 Esters Blvd, Irving 75063 | (972) 445-2000 |
| Shared Technologies Irving 75063 | (972) 915-9324 |
| International Network Svc 1255 Corporate Dr, Irving 75038 | (972) 550-4400 |
| Voice Plex Corp 1425 Greenway Dr 250, Irving 75038 | (972) 550-0900 |
| Birch Telcom 6309 Oconnor Blvd, Irving 75039 | (972) 409-6888 |
| Nec Business Solutions Inc 6555 State Highway 161, Irving 75039 | (972) 869-9360 |
| Gte Sprint Installation 2511 E Grauwyler Rd, Irving 75061 | (972) 438-2346 |
| Brooks Fiber Communications 2477 Gateway Dr, Irving 75063 | (972) 753-1900 |
| Telecom Outsourcing Svc Inc 9825 Rodeo Dr, Irving 75063 | (972) 910-0225 |