- 8-ports for loop-start or ground-start CO, foreign exchange (FX), and Wide Area Telecommunications (WATS) trunks.
- The TN2147 has eight analog CO trunk ports
- Each Port has tip and ring signal leads. The TN2147 uses four (1 for each pair of ports) Dual Subscriber Line Audio processing Circuits (DSLACs) to be administered to meet a given transmission and impedance requirement. The DSLACs convert analog signals to digital signals and digital signals to analog signals to interface the analog CO trunks to the systems digital TDM bus.
- The TN2147C provides multi country signaling based on trunk type of either: loop-start, ground start, or battery reverse loop-start