A-12 APPENDIX A: MODEM SPECIFICATION AND INTERFACE PIN ASSIGNMENTS
Private Line Port Cable Pin Assignments
Each modem on the communications card is equipped with a single Private line port supporting either a 2- or 4-wire connection, which is accessed via the appropriate PRIVATE LINE socket on the card’s interface module (refer to the rear panel diagram in Section 1.2 for an exact reference of which socket services which modem on the communications card). This is an RJ11 type socket, that would typically be connected to a 2- or 4-wire private line outlet using a cable conforming to the wiring diagram shown below:
