| Business | Phone |
| Telecom Outsourcing Svc 1 13th St, Charlestown 2129 | (617) 242-2333 |
| Sonet Electrical Systems Inc 30 Bunker Hill Industrial Park, Charlestown 2129 | (617) 242-6569 |
| Sonet Electrical Systems Inc 492 Rutherford Ave, Charlestown 2129 | (617) 242-6170 |
| Corporate Telephone 56 Roland St, Charlestown 2129 | (617) 625-1200 |