Specifications

Introduction C-1
Appendix C
IR-G.703/CO Interface
Module
C.1 Introduction
IR-G.703/CO is an interface module for RAD modems that converts G.703 64
kbps codirectional signals to TTL levels. The converted data is sent over the
modem link using the modem modulation technique and converted back at the
other end into G.703 64 kbps codirectional signals, or into any other digital
interface signal possible. IR-G.703/CO is available with two types of physical
connections: a terminal block or an RJ-45 (see Table C-1 for the RJ-45 connector
pinout).
Figure C-1 illustrates the panel of the IR-G.703/CO interface module.
Figure C-1. Panel of the IR-G.703/CO Module
Table C-1. RJ-45 Connector Pinouts
Pin Function
3 RCV (+)
6 RCV (-)
4 XMT (+)
5 XMT (-)
2 GND