272 CHAPTER 10: CONFIGURING ROUTING AND TRANSLATION SERVICES
A route plan associates a dial pattern with a route (a route identifies one
or more end points). A route plan determines how a call processor directs
calls. End points can be one of the following types:
■Call Processor — Use this type of call processing end point when a
call terminates at the end point (for example, in a single-site system).
■Redirect Call Processor — Use this type of call processing end point
when a call does not terminate at the end point and therefore requires
further routing information (for example, a region-to-region call in a
multi-site system).
■Gateway — Use this type of end point to identify IP Messaging
servers and clients, IP Conferencing servers, and media gateways (so
that calls can be placed throughout the PSTN) end points.
Earlier releases of VCX software required configuration of route plans
(called URI route maps in previous releases) to identify all call processing
end points. With VCX software version 7.1, this is no longer required.
Each call processor in a VCX single-site or multi-site system running
version 7.1 can route calls to other call processors in the system using the
Global Directory (which you must configure; see The Global Directory).
However, you must still configure route plans that identify the IP
Messaging servers and clients, IP Conferencing servers, and media
gateways in your system. See Route Configuration for Voicemail and
Music on Hold and Route Configuration to a Gateway for detailed
information.
Although not required, you can still configure route plans to identify call
processing end points. See Route Plan Configuration for Single-Site
Systems and Route Plan Configuration for Multi-site Systems) for this
optional configuration information.
Route Plan
Configuration for
Single-Site Systems
A single-site system includes either a single pair or two pairs of redundant
VCX servers.
■In a single pair system, both servers run the VCX IP Telephony and IP
Messaging software configuration. Each server has an IP address for
its call processor and IP Messaging module.
■In a two pair system, one pair of servers runs the call processing
software and the second pair runs IP Messaging software. Each server
in the first pair has an IP address for its call processor. Each server in
the second pair has an IP address for its IP Messaging module.