Rtm Isdn; Isdn/Pstn Clock Source - Polycom 4000 Hardware Manual

RealPresence®Collaboration Server 4000 Hardware Guide
RMX 4000 Rear Panel - RTM-IP 4000 Component Description
Item
USB
Standby button

RTM ISDN

The RTM ISDN card connects directly to an MPMx/MPMRx. The RTM ISDN card routes data between the
MPMx/MPMRx cards and components of the system, converts ISDN T1/E1 media to IP packets and
provides connectivity to external ISDN networks.
The RTM ISDN card is installed on the rear panel of the RMX interfaces between the RMX unit and the
ISDN/PSTN switch. In an RMX with a single MPMx/MPMRx card – the RTM ISDN card must be installed in
the rear panel slot on the same level as the MPMx/MPMRx card. In an RMX with at least two MPMx/MPMRx
cards – the RTM ISDN card can be installed in any two rear panel card slots.
Up to two RTM ISDN cards can be installed in one RMX 4000. Up to a total of 14 E1 or 18 T1 PRI cables
can be installed with two RTM ISDN cards.
Each RTM ISDN card includes the following connections:
● 1 LAN port
● 7 E1 or 9 T1 PRI lines that can be plugged into any of the 12 connections as shown in the figure
below.
E1 and T1 spans cannot be connected simultaneously to the same card, therefore, it is not possible
to have a mixed E1 and T1 ISDN Network Service.
RMX 4000 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).
Polycom, Inc.
Description
USB key connection
Toggle between ON/OFF and standby. Use this button to either perform Diagnostics or
Software Recovery on the RMX after turning the system ON.
Short press (2 seconds) - MPMx Diagnostics.
Long press - (10 seconds) Media and RTM IP 4000 Software Recovery.
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