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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.