13
Primary to Basic Rate ISDN Multiplexer
TECHNICAL: 0118 931 2233
Quick Reference Guide - Introduction
The Primary to Basic Rate ISDN Multiplexer consists of a chassis, mains or DC power
supply, controller card and up to 2 line cards. The controller card must be fitted in the first
slot.
There are no user serviceable parts inside the Primary to Basic Rate ISDN Multiplexer. It
should only be opened by approved maintenance staff, otherwise the warranty will be
invalidated.
Figure 1 The Primary to Basic Rate ISDN Multiplexer front and rear panels
Chassis
The chassis consists of a metal case and a backplane to accept the controller card, line cards
and power supply.