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| Competitive Telephone Systems 248-334-5800 |
2065 Franklin | Bloomfield Hills, MI 48302 |
| Solutions Telecommunications Specialists 906-789-3780 |
2419 Ludington | Escanaba, MI 49829 |
| All Tronics 616-949-0900 |
4980 Kendrick, SE | Grand Rapids, MI 49512 |
| First Telecommunications Inc 517-750-1665 |
2516 Dorvin Drive | Jackson, MI 49201 |
| Michigan Telephone Systems 248-693-0000 |
1725 W Clarkston | Lake Orion, MI 48362 |
| BTS Telecom 616-983-4765 |
151 Hilltop | St Joseph, MI 49085 |
| Martel Telephone Center & Repair 989-345-3658 |
200 S 2nd Street | West Branch, MI 48661 |