Polycom (RMX) 1500 User Manual

RealPresence Collaboration Server (RMX) 1500/1800/2000/4000 Administrator’s Guide 

Polycom®, Inc. 

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conference. At the conference level the MCU verifies whether the participant can join the conference and if 
the participant is the conference chairperson. The external database can populate certain conference 
parameters.

For more information about Ad Hoc conferencing, see 

Gateway to Polycom® Distributed Media Application™ (DMA™) 7000 enables audio only PSTN, ISDN 
(video endpoints using only their audio channels), SIP and H.323 calls to connect to the Polycom DMA 7000 
via gateway sessions running on the Collaboration Server. Each Collaboration Server conference acting as 
a gateway session includes one connection to the endpoint and another connection to the DMA. The DMA 
7000 enables load balancing and the distribution of multipoint calls on up to 10 Polycom Collaboration 
Server media servers.

As part of this solution, the Collaboration Server acts as a gateway for the DMA that supports H.323 calls. 
The PSTN, ISDN or SIP endpoint dials the virtual Meeting Room on the DMA via a special Entry Queue on 
the Collaboration Server.

For more information, see 

.

ISDN participants are not supported with Collaboration Server 1800.