| Business | Phone |
| Technowledge Consulting Corp 12 E Greenway Plz 1350, Houston 77046 | (210) 225-7878 |
| Speed Communications 6400 Southwest Fwy I, Houston 77074 | (713) 783-1935 |
| Petracom 10696 Haddington Dr 104, Houston 77043 | (281) 340-2300 |
| Bassler & Assoc 10003 Wickersham Ln, Houston 77042 | (713) 974-0229 |
| Amr Travel Inc 4100 Westheimer Rd, Houston 77027 | (713) 993-9898 |
| Byers Engineering Co 9525 Katy Fwy 490, Houston 77024 | (713) 464-9790 |
| Collins Voice & Data 11320 Fm 529 Rd B, Houston 77041 | (713) 937-9370 |
| Consumer Access 5120 Woodway Dr, Houston 77056 | (713) 626-1661 |
| Emissary Group 3100 Richmond Ave, Houston 77098 | (713) 874-0707 |
| Fitt Telecommunications 2121 Brittmoore Rd 3600, Houston 77043 | (713) 464-6340 |
| Mid-South Telecommunications 3355 W Alabama St 1140, Houston 77098 | (713) 626-2051 |
| Global Esolutions 909 Texas St, Houston 77002 | (713) 228-2131 |
| Herbst & Assoc Telecomms 2728 Barbara Ln, Houston 77005 | (713) 977-7878 |
| Kelsey-Seybold Telecom 1706 Winter Bay Ln, Houston 77088 | (281) 448-0840 |
| I P Solutions Llc 2656 South Loop W, Houston 77054 | (713) 660-7583 |
| Id-Ten-T 618 Fm 1959 Rd, Houston 77034 | (281) 484-4944 |
| Idex Global Svc Inc 2501 Central Pkwy B10, Houston 77092 | (713) 464-7540 |
| Ipx Communications Corp 8582 Katy Fwy, Houston 77024 | (713) 932-7268 |
| Irm Intl 5850 San Felipe St 500, Houston 77057 | (713) 975-6044 |
| UnifiedCommunications.com 7100 Old Katy Road, Building A, Houston 77024 | (800) 641-6416 |