Polycom Welding System 3725-77601-001H Manual Do Utilizador

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Polycom CMA System Setup Overview
Polycom, Inc. 
395
 
Default, Redundant, Alternate, and Neighboring Gatekeepers
Default Gatekeeper
Typically during the First Time Setup process, the CMA system is designated 
as the default gatekeeper and the default gatekeeper settings are implemented. 
The CMA system as the default gatekeeper responsible for:
• Default, alternate and neighboring gatekeeper management
• Device registration
• Address resolution
• Bandwidth control and management
• Call control signaling
• Call management, authorization, access, and accounting
• Firewall traversal
When a call originates from the CMA system and the system is unable to 
resolve the dialed address, the call can be forwarded to another gatekeeper for 
resolution. To enable call forwarding, create a neighboring region and a 
dialing rule that routes calls using a particular prefix to the neighboring 
gatekeeper. 
We recommend keeping the CMA system as the default gatekeeper, so that all 
endpoints and other devices on the network capable of automatic registration 
will register with it. This allows the CMA system to serve as the centralized 
manager of the network and more effectively aid in bandwidth management, 
firewall traversal, and device authentication and authorization.
Redundant Gatekeeper
When the CMA system is deployed in a redundant configuration, the 
redundant CMA system operates as a redundant gatekeeper in parallel with 
the primary CMA system sharing endpoint registration information. If the 
primary CMA system becomes unavailable, the redundant CMA system 
replaces it until it returns. 
Note
MCUs that register with a GRQ instead of a RRQ like the Polycom RMX system, 
will only register with the CMA system when it is enabled as the default gatekeeper 
for the zone.