| Business | Phone |
| Hirefone Usa Inc 60 E 42nd St # 605, New York 10165 | (212) 557-9300 |
| International Cellular Svc 350 5th Ave # 2708, New York 10118 | (212) 736-7368 |
| Max Touch Communications 1170 Broadway, New York 10001 | (212) 213-6345 |
| Mobal Communications 171 Madison Ave # 300, New York 10016 | (212) 785-5800 |