| Business | Phone |
| C E Tech Inc 50 Lake Ave, Worcester 1604 | (508) 756-5525 |
| Charter Communications 95 Higgins St, Worcester 1606 | (508) 926-3701 |
| Communication Service Systems 76 Webster St, Worcester 1603 | (508) 831-7077 |
| Signet Electronic Systems Worcester 1609 | (508) 754-5375 |
| Spencer Technologies 640 Lincoln St, Worcester 1605 | (508) 595-9496 |
| Premcom Networks 205 Millbury St, Worcester 1610 | (508) 751-5700 |
| Global Teli Message 190 Millbury St # 312, Worcester 1610 | (508) 755-6300 |
| Barry Communications Inc 146 W Boylston Dr, Worcester 1606 | (508) 853-7120 |