| Business | Phone |
| A T & T Cits 5426 Koster Hill Pl, Cary 27511 | (919) 851-6035 |
| Corporate Telecom Solutions 102 Commonwealth Ct, Cary 27511 | (919) 388-8200 |
| Telecom Systems Solutions 109 Woodhue Ln, Cary 27511 | (919) 376-0230 |
| Southeastern Telecom 149 E Chatham St, Cary 27511 | (919) 380-1802 |
| Mas Tec 2721 Carpenter Upchurch Rd, Cary 27519 | (919) 460-9308 |
| Mci 6400 Weston Pkwy, Cary 27513 | (919) 377-4600 |
| Verizon Communications 6501 Weston Pkwy # 100, Cary 27513 | (919) 481-6464 |