Specifications

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Cisco IP Telephony Network Design Guide
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Chapter 5 Dial Plan Architecture and Configuration
Cisco CallManager Dial Plan Architecture
Route List
The term route point from previous releases of Cisco CallManager has been
replaced by route list in Cisco CallManager Release 3.0, though the function
remains much the same. A route list defines the way a call is routed. Route lists
are configured to point to one or more route groups, which effectively serve the
purpose of trunk groups. The route list sends a given call to a route group in a
configured order of preference. For example, the primary route group might offer
a lower cost for calls, while the secondary route groups would be used only if the
primary is unavailable due to an all-trunks-busy condition or insufficient IP WAN
resources.
Route Group
Route groups control specific devices such as gateways. Gateways can be based
on the Skinny Gateway Protocol, MGCP, or H.323. Endpoints such as NetMeeting
clients or remote Cisco CallManagers across the IP WAN are configured as H.323
gateways. The route group points to one or more devices and can select the
devices for call routing based on preference. The route group can direct all calls
to the primary device and then use the secondary devices when the primary is
unavailable. This serves effectively as a trunk group.
One or more route lists can point to the same route group. All devices in a given
route group have the same characteristics, such as path and digit manipulation.
Route groups have the ability to perform digit manipulation and can override
route pattern digit manipulation (see the “Route Pattern” section on page 5-6).