| Business | Phone |
| Advanced Technological Sltns 7401 Alma Dr 1621, Plano 75025 | (972) 527-6329 |
| Corban Networks 901 Jupiter Rd, Plano 75074 | (972) 234-5422 |
| Dsc Communications Corp 3400 E Plano Pkwy, Plano 75074 | (972) 612-3515 |
| Elcom Associates Inc 621 J Pl, Plano 75074 | (972) 423-2234 |
| Field Telecomms Inc 1111 Jupiter Rd 107c, Plano 75074 | (972) 424-1623 |
| Kolbe & Assoc 9604 Southern Hills Dr, Plano 75025 | (972) 208-8825 |
| Mackie Morris Communications 5900 Baywater Dr 2802, Plano 75093 | (972) 403-7133 |
| Micronet Communications Inc 720 F Ave 100, Plano 75074 | (972) 422-7200 |
| Nelson Tech 1508 Tawakoni Ln, Plano 75075 | (972) 422-9832 |
| Wcc Group Inc 1829 Carmel Cv, Plano 75075 | (972) 930-0600 |