| Business | Phone |
| 3-Com Corp 15301 Dallas Pkwy, Addison 75001 | (972) 628-2100 |
| Advanced Data Recovery 15301 Spectrum Dr, Addison 75001 | (214) 273-6915 |
| Howard Data Communications 4314 Sunbelt Dr, Addison 75001 | (972) 713-9252 |
| Infonet 15770 Dallas Pkwy, Addison 75001 | (972) 661-9555 |
| Mcdata Corp 15851 Dallas Pkwy, Addison 75001 | (214) 561-8633 |
| Quickview Technologies Inc 3939 Belt Line Rd, Addison 75001 | (972) 490-5566 |
| Version 4 Technologies 4288 Kellway Cir, Addison 75001 | (972) 267-1558 |