Chapter 7: Network Call RoutingDefine Network Call Routing
ShoreTel 8 Planning and Installation Guide 89
To define admission control:
Step 1 Open the Site edit page.
Step 2 Enter the proper amount in the Admission Control Bandwidth field.
See the ShoreTel 8 Administration Guide for more information about the Site
edit page and for instructions about computing Admission Control Bandwidth.
7.3.4 Specifying Parameters for the Routing Decision
Once the available set of trunks is established, the switching software makes a routing
decision, with the goal of minimizing toll charges and WAN bandwidth. The Network Call
Routing algorithm bases the routing decision on the Local Area Code, Additional Local
Area Codes, and Nearby Area Codes defined on the Trunk Group edit page.
7.3.4.1 Network Call Routing Algorithm
When multiple trunks meet the same criteria, a trunk is seized randomly. In general, trunks
that are configured last are hunted first. Over time, however, as trunks are deleted and
added, hunting becomes increasingly random.
Digital trunks are given precedence over analog trunks in all routing decisions.
To make the routing decision, the algorithm poses the following questions. For the number
dialed, is there:
1. A trunk at the originating site for which the call is local?
2. A trunk at the proxy site for which the call is local?
3. A trunk at any other site for which the call is local?
4. A trunk at the originating site for which the call is considered nearby?
5. A trunk at the proxy site for which the call is considered nearby?
6. A trunk at any other site for which the call is considered nearby?
7. A trunk at the originating site designated for long distance?
8. A trunk at any proxy site designated for long distance?
9. A trunk at any other site designated for long distance?
Figure 7-2 Trunk Services on the Trunk Group Edit Page
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