Avaya Definity TN767 DS1 Interface Circuit Card (Refurbished)The Avaya Definity TN767 DS1 Card supports DS1 Digital Connectivity, CO, TIE, DID and OPS Port Types, and ISDN PRI (Release 6 and Higher). Key Features: TN767 DS1 (TN767) Supports DS1 Digital Connectivity Supports CO, TIE, DID, and OPS Port Types using Robbed Bit Signaling Protocol Supports ISDN PRI in Release 6 and Higher Compatibility: Avaya Definity phone system
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