TN763D
Description
Provides 4 ports. Each port has T, R, SZ, SZ1, and S1 signal leads. Used for on-premises applications such as Music-on-hold, loudspeaker paging, code calling, and recorded telephone dictation access. 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.
