| Business | Phone |
| A T & T 138 Saint James Ave # 1, Boston 2116 | (617) 369-6106 |
| A T & T 343 Congress St, Boston 2210 | (617) 369-6165 |
| A T & T Co 99 Bedford St, Boston 2111 | (617) 574-3157 |
| Abrams Group 36 Bromfield St, Boston 2108 | (617) 521-9097 |
| Abros Communications Inc 451 D St, Boston 2210 | (617) 904-8000 |
| Winstar Communications 99 Summer St # 200, Boston 2110 | (617) 303-9800 |
| X O Communications Inc 101 Federal St # 9, Boston 2110 | (617) 748-5200 |
| X O Communications Inc 451 D St, Boston 2210 | (617) 330-9062 |
| Zone Telecom Inc 225 Franklin St, Boston 2110 | (617) 439-0532 |
| Adelphia Business Solutions 101 Federal St, Boston 2110 | (617) 428-0123 |
| Advanced American Electronics 110 Marlborough St # 1, Boston 2116 | (617) 577-0500 |
| Vaultus Inc 283 Summer St, Boston 2210 | (617) 338-9849 |
| Verizon Communications 1 S Market St # 8, Boston 2109 | (617) 973-5141 |
| Verizon Communications 260 Franklin St, Boston 2110 | (617) 439-6257 |
| Verizon Communications Commonwealth Pier, Boston 2210 | (617) 439-5308 |
| Verizon New England Inc 185 Franklin St # 1602, Boston 2110 | (617) 743-9800 |
| American Tower Corp 116 Huntington Ave, Boston 2116 | (617) 375-7500 |
| Banash Associates 51 Church St, Boston 2116 | (617) 482-4876 |
| Syntegra 185 Devonshire St, Boston 2110 | (617) 350-0022 |
| Tcn 359 Boylston St # 5, Boston 2116 | (617) 354-1234 |
| Bur Tronics Telecom Inc 108 Kilmarnock St, Boston 2215 | (617) 378-3048 |
| Reservoir Tech 33 Sleeper St # 504, Boston 2210 | (617) 542-2218 |
| Joe Comella 5 N Margin St, Boston 2113 | (617) 573-9499 |
| Concert British Telecomm 451 D St # 102, Boston 2210 | (617) 439-3934 |
| Continental Communications Svc 1 Faneuil Hall Market Pl, Boston 2109 | (617) 399-9980 |
| Cypress Communications 75 Federal St, Boston 2110 | (617) 426-3200 |
| Netversant-New England 100 Franklin St, Boston 2110 | (617) 747-7400 |
| Nosc Telecom 35 Kingston St, Boston 2111 | (617) 348-4144 |
| Elantic Networks 1 Summer St, Boston 2110 | (617) 482-9829 |
| Mci 800 Boylston St, Boston 2199 | (617) 960-1130 |
| Mci Prudential Center, Boston 2116 | (617) 927-7100 |
| Masco Telephone Answering 375 Longwood Ave, Boston 2215 | (617) 632-2310 |
| Gnome Group 286 Congress St # 4, Boston 2210 | (617) 338-7575 |
| Infortext Group 151 Pearl St # 4, Boston 2110 | (617) 482-3247 |