| Business | Phone |
| Dial Telecommunications Inc 39 W 32nd St # 302a, New York 10001 | (212) 967-8099 |
| Polygon Data & Voice 55 Chrystie St # 19, New York 10002 | (212) 625-2607 |
| Spectra Communications Inc 208 E 51st St, New York 10022 | (212) 888-6363 |
| Paetec Communications 60 E 42nd St, New York 10165 | (212) 557-5454 |