Isdn/pstn clock source, Isdn/pstn clock source -14 – Polycom DOC2558A User Manual

Page 20

Chapter 1- Hardware Description

1-14

Figure 1-3

RMX 2000 RTM ISDN Rear Panel Layout

ISDN/PSTN Clock Source

Each RTM ISDN card has its own primary and secondary clock source.

The first span to synchronize becomes the primary clock source and the

second span to synchronize becomes the secondary clock source. This

clock is used to synchronize ISDN spans only (it is not the system clock).
A single clock source triggers an alarm that can be turned off by setting

the appropriate flag in the system configuration.

LAN & LEDs

E1/T1 connections

H/S LED

The RTM ISDN card supports 200 audio participants, regardless of whether the
spans are E1 or T1.