| Business | Phone |
| Audio-Voice Inc 227 E 56th St, New York 10022 | (212) 750-9500 |
| Bci 80 Broad St, New York 10004 | (212) 785-2245 |
| Edward & Zuck Comm Inc 265 W 40th St # 9, New York 10018 | (212) 967-0833 |
| Bt Americas Inc 350 Madison Ave, New York 10017 | (646) 487-7400 |
| Granite Telecommunications 920 Broadway, New York 10010 | (212) 388-1300 |
| I Basis Inc 111 8th Ave # 816, New York 10011 | (212) 741-4472 |
| Lextel Communications Inc 150 Broadway # 1510, New York 10038 | (212) 643-0001 |
| Wideband Consulting 118 W 75th St # B, New York 10023 | (212) 769-2420 |
| World Exchange 60 Hudson St # 1508, New York 10013 | (212) 566-6240 |
| Rapid O Communication 3671 Broadway # 152, New York 10031 | (212) 283-7853 |
| New York Teleconferencing Inc 235 E 95th St # 6j, New York 10128 | (212) 752-5015 |
| Osaka Telecommunications 130 W 42nd St, New York 10036 | (212) 730-8306 |
| Nationalconsultant.Com 82 Wall St # 1105, New York 10005 | (212) 898-9000 |
| Neris International Inc 120 E 38th St, New York 10016 | (212) 213-6993 |