Avaya TN747B-R Central Office Trunk Circuit Card

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"Avaya TN747B The Avaya TN747B is a central office trunk circuit card with has eight ports for loop-start or ground-start CO that enable foreign exchange (FX), and Wide Area Telecommunications (WATS) trunks. The ports have tip and ring (analog voice) signals. TN747B Features: Central Office Trunk Circuit Card, 8-Ports Loop-Start or Ground-Start, Tip & Ring, Compatible w/ Trunk Paging Interface, Supports Call Search Feature, Works With The Following System Series: Definity System 75"

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