Rtm Isdn 1500; Isdn/Pstn Clock Source - Polycom 1500 Hardware Manual

RealPresence Collaboration Server (RMX) 1500 Hardware Guide
RMX 1500 Rear Panel - RTM IP 1500 Component Description
Item Description
Standby button 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 1500 Software Recovery.

RTM ISDN 1500

The ISDN card is shipped out of the box and must be manually installed into the rear of the Collaboration
Server (RMX) 1500. For more information,
The RTM ISDN 1500 connects directly to the built-in MPMx. The RTM ISDN card routes data between the
MPMx card 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.
With the Collaboration Server (RMX) 1500, you can either have a dedicated E1 or T1 Type Network
Service. It is not possible to have a mixed E1 and T1 ISDN Network Service.
The RTM ISDN card contains four connections to which up to four E1 or T1 PRI lines can be connected as
shown in the figure below.
RMX 1500 RTM ISDN Real Panel Layout
The RTM ISDN card supports up to 120 audio participants, regardless of whether the spans are E1
or T1.

ISDN/PSTN Clock Source

Each RTM ISDN 1500 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.
Installing or Replacing the RTM ISDN 1500 Card .
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