User's Manual

RealPresence Collaboration Server 800s Administrator’s Guide
16-28 Polycom, Inc.
SIP Proxy Failover With Polycom® Distributed Media
Application™ (DMA™) 7000
Collaboration Server systems that are part of a DMA environment can benefit from DMA’s SIP
Proxy Failover functionality.
SIP Proxy Failover is supported in DMA’s Local Clustering mode with redundancy achieved
by configuring two DMA servers to share a single virtual IP address.
The virtual IP address is used by the Collaboration Server as the IP address of its SIP Proxy.
No additional configuration is needed on the Collaboration Server.
Should a SIP Proxy failure occur in one of the DMA servers:
• The other DMA server takes over as SIP Proxy.
• Ongoing calls may be disconnected.
• Previously ongoing calls will have to be re-connected using the original IP address,
registration and connection parameters.
• New calls will connect using the original IP address, registration and connection
parameters.