Cables, Connectors, and Pin Assignments
E-12 9161-A2-GH30-30April 1998
Voice APM Cables
This section provides the pin assignments for the FXO, FXS and E&M voice APM
50-pin Amphenol connectors (RJ27X socket), followed by the pin assignments for
the extension cables that can be used with these APMs.

FXO/FXS Voice APM Connector

The FXO/FXS Analog Voice APM uses a single 50-pin connector to provide eight
2-wire interfaces for connecting to analog voice equipment.
FXO/FXS 50-Pin Amphenol Connector
Port Pin Signal
126 T
1 R
229 T
4 R
332 T
7 R
435 T
10 R
538 T
13 R
641 T
16 R
744 T
19 R
847 T
22 R
All other pins are unconnected.