E
American Telecommunications Systems Management Associates Inc
6441 Norway Road, Dallas TX 75230-5146
(214) 528-3584
G
American Telephone & Data
323 Parkway Drive, Wheaton IL 60187-3609
(630) 752-1800
We are also authorized dealers of Avaya and Mitel phone branch exchange (PBX) systems and voice over internet protocol (VoIP) systems.
K
American Telephone Service
816 Pioneer Drive, Spartanburg SC 29316-9336
(864) 578-7232
telephone installation and service
M
American Time And Temperature, Inc
10712 Linn Station Road, Louisville KY 40223-3708
(502) 245-5304