| Business | Phone |
| Unicast Communications 5 Greenwich Office Park, Greenwich 6831 | (203) 862-6100 |
| Telnet Communications Capital 332 Riversville Rd, Greenwich 6831 | (203) 869-5114 |
| Blackbird Communication 11 Weaver St # B, Greenwich 6831 | (203) 531-9141 |
| Simmons Patriot Media 35 Mason St, Greenwich 6830 | (203) 622-8999 |
| Calumet Communications 2 Greenwich Plz, Greenwich 6830 | (203) 622-7662 |
| Communication Project 20 Putnam Grn # 1des, Greenwich 6830 | (203) 869-6216 |
| R Leung Communications 19 Greenway Dr, Greenwich 6831 | (203) 532-2996 |
| Davis Communications 200 Railroad Ave, Greenwich 6830 | (203) 862-9720 |
| Peake Communications Corp 19 Indian Field Rd, Greenwich 6830 | (203) 869-4268 |
| Moonbeam Communications 340 Pemberwick Rd, Greenwich 6831 | (203) 618-0603 |
| Graphics Communications 2 Greenwich Plz, Greenwich 6830 | (203) 622-3905 |