TN763 Auxillary Trunk Card-Refurbished

Provides 4 ports for on-premise trunk applications such as music-on-hold, loudspeaker paging, code calling, and recorded telephone dictation access

Each port has T, R, SZ, SZ1, S, and S1 signal leads # Trunk uses loop-start on tip and ring with 1-way in, 1-way out, or 2-way 2-wire transmission

Two additional pairs of leads provide seizure and answer supervision and/or make busy information

The TN763C supports recorded announcement equipment and Code Calling