| Business | Phone |
| A T & T 320 E Big Beaver Rd, Troy 48083 | (248) 528-6696 |
| A T & T 750 Stephenson Hwy, Troy 48083 | (248) 597-0025 |
| Alliance Telecommunication Inc 850 Stephenson Hwy 402, Troy 48083 | (248) 588-5671 |
| Telecom Group 1017 Naughton Dr, Troy 48083 | (248) 740-0440 |
| R G Telecom 5220 Vineyards Ct, Troy 48098 | (248) 641-7744 |
| Alliance Telecommunication Inc 900 Wilshire Dr, Troy 48084 | (248) 307-0062 |
| Patriot Systems Inc Po Box 99, Troy 48099 | (248) 269-9872 |