Polycom (RMX) 1500 User Manual

Page of 1183
RealPresence Collaboration Server (RMX) 1500/1800/2000/4000 Administrator’s Guide 
Polycom®, Inc. 
1068
Meeting Room Properties - Network Services - SIP Registration
Entry Queue Properties - Network Services - SIP Registration
Collaboration Server Configuration for CAC 
Implementation
CAC is enabled by manually adding the flags to the system Configuration and setting their values as follows:
● To enable the Call Admission Control implementation in the Collaboration Server:
CAC_ENABLE=YES
● In addition, to ensure that endpoints such as HDX remain connected to the conference for its duration 
when the Collaboration Server is configured with FQDN address and the Lync server is working with 
load balancing and holds more than one address, the following two flags must be manually added 
and set to:
MS_KEEP_ALIVE_ENABLE = YES
Note: Since the keep alive is only required when the Lync server is working with load balancing 
and holds more than one address, the default value is NO.
SIP_TCP_PORT_ADDR_STRATEGY = 1 (default setting)