| Business | Phone |
| American Voice Mail Svc 209 E University Ave, Dallas 75201 | (972) 434-7300 |
| Voicestream 11800 Webb Chapel Rd, Dallas 75234 | (972) 484-2169 |
| Automated Voice Solutions 14902 Preston Rd, Dallas 75254 | (972) 789-1355 |
| Voice Memo Inc 3321 Oak Lawn, Dallas 75219 | (214) 559-4503 |