Polycom (RMX) 1500 User Manual

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RealPresence Collaboration Server (RMX) 1500/1800/2000/4000 Administrator’s Guide 
Polycom®, Inc. 
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Dialing to Polycom® RealPresence DMA System
Two dialing methods are available to ISDN/PSTN participants calling the DMA:
● Direct with automatically generated destination dial strings from dial-in strings. This option is 
available only from version 7.1 and only to Collaboration Server with MPM+ and MPMx cards.
● Via Gateway IVR.
In addition, PSTN participants can dial the Gateway IVR and can use the MCU or DMA prefix in the 
gatekeeper together with the conference ID/endpoint alias as the destination string to simplify the input. This 
is one of the methods for PSTN participants to connect to a virtual Meeting Room on the DMA. For more 
details, see 
.
Calling a RealPresence DMA Direct with Automatically Generated 
Destination Dial Strings
In this configuration, the gateway session initiator enters one of the dial-in numbers assigned to the gateway 
profile. This number is truncated by the Collaboration Server gateway and the truncated digits are replaced 
by a prefix that corresponds either to the DMA prefix in the Gatekeeper. 
Call Flow from ISDN Endpoint to Polycom DMA with Automatically Generated Forwarded Dial String
Example:
The figure above shows the call flow assuming the following parameters:
First Dial-in Number
5705550
Last Dial-in Number
5705560
Use Dial-in Numbers as Destination ID
Selected
DMA Meeting Room ID
5555
Destination Prefix (DMA prefix in Gatekeeper)
26
Number of Rightmost Digits to Append
4