| Business | Phone |
| Carolina Fiber Communications 3812 Tarheel Dr # E, Raleigh 27609 | (919) 878-5770 |
| Tech Datacom Systems Inc 3112 Glen Royal Rd, Raleigh 27617 | (919) 783-6600 |
| Telephone Systems Inc 200 Powell Dr # 105, Raleigh 27606 | (919) 851-4005 |
| Strategic Connections Inc 5132 Departure Dr, Raleigh 27616 | (919) 878-0550 |
| Groupware International 6300 Limousine Dr, Raleigh 27617 | (919) 341-1555 |
| Peerless Communications Inc 500 S New Hope Rd # 109, Raleigh 27610 | (919) 873-1203 |
| Wire Drop Systems Inc 3903 Capital Blvd # 226, Raleigh 27604 | (919) 271-1000 |