| Business | Phone |
| Cooper & Assoc 10235 W Little York Rd 158, Houston 77040 | (713) 896-8896 |
| Houston Global Direct Comms 6776 Southwest Fwy, Houston 77074 | (713) 785-9377 |
| Corporate Office 8700 S Gessner Dr, Houston 77074 | (713) 721-4232 |
| Digital Link Corp 2825 Wilcrest Dr, Houston 77042 | (713) 722-7228 |
| Icf Communication Systems 10400 Westoffice Dr # 117, Houston 77042 | (832) 242-5001 |
| Telq Corp 10003 Longmont Dr, Houston 77042 | (713) 787-9771 |
| 7 Digit Communications 5415 Aldine Mail Rd, Houston 77039 | (281) 227-0007 |
| A & M Communications Inc 6666 Harwin Dr, Houston 77036 | (713) 706-3663 |
| Baker Communications Inc 2400 Augusta Dr 369, Houston 77057 | (713) 627-7700 |
| Belay Media Solutions 5120 Woodway Dr, Houston 77056 | (713) 877-1008 |
| Broadwing Communications 5959 Corporate Dr, Houston 77036 | (713) 271-4654 |
| Communican 1502 Augusta Dr, Houston 77057 | (713) 266-0109 |
| Creacom Inc 506 Northville St B, Houston 77037 | (281) 447-1967 |
| Dbl 259 W Rittenhouse St, Houston 77076 | (713) 333-2600 |
| Digital Link Corp 2000 Bagby St, Houston 77002 | (713) 874-0082 |
| Disease Management Inc 11999 Katy Fwy, Houston 77079 | (281) 293-9782 |
| Excel Telecommunications 6127 Pebble Beach Dr, Houston 77069 | (281) 893-4500 |
| Fifth Business 5555 San Felipe St, Houston 77056 | (713) 622-5423 |
| Fox Sports Net 5251 Gulfton St, Houston 77081 | (713) 666-1294 |
| Frogdog Communications 1501 Malone St, Houston 77007 | (713) 862-2505 |
| Micro Radio Communications Inc 6710 Mayfair St, Houston 77087 | (713) 645-7715 |
| Global Beauty Network Inc 250 Pennbright Dr, Houston 77090 | (281) 874-0454 |
| Global Group 908 Town And Country Blvd, Houston 77024 | (713) 365-9243 |
| Got The Hookup 12800 Northborough Dr, Houston 77067 | (281) 876-7243 |
| Mackay World Svc 8532 South Loop E, Houston 77017 | (713) 644-3467 |
| Lloyd Communications 512 Arlington St, Houston 77007 | (713) 868-5847 |
| Lockard & White Inc 14511 Falling Creek Dr 507, Houston 77014 | (281) 586-0574 |
| Liberty Sports Communications 5251 Gulfton St, Houston 77081 | (713) 592-6465 |
| Leetel Communications Inc Houston 77098 | (713) 524-0560 |
| I Xc Communication 18710 E Hardy Rd, Houston 77073 | (281) 784-1583 |
| International Telecomm Mgmt 7100 Regency Square Blvd, Houston 77036 | (713) 830-2200 |
| Janice Clark & Assoc 4189 Bellaire Blvd, Houston 77025 | (713) 664-4365 |
| Datavox Inc 2000 W Sam Houston Pkwy S 9, Houston 77042 | (713) 881-7407 |