Isdn/pstn clock source, Cables connected to the rtm ip & isdn cards, Isdn/pstn clock source -15 – Polycom DOC2558C User Manual

Page 21: Cables connected to the rtm ip & isdn cards -15

Polycom RMX 2000 Hardware Guide

1-15

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.

Cables Connected to the RTM IP & ISDN Cards

All external connectors are located on the rear panel.

Figure 1-4

RMX 2000 Rear Panel View with Cables

LAN 2 Connection

Power

Cable

Off/On

switch

E1/T1 Connection

Do not remove the protective caps from LAN1, LAN3 and ShMG ports.