Specifications

Network Call Routing
Planning and Installation Guide 7 – 5
• If call is long distance from the trunk, it was not local to the caller. For example,
network call routing will not send a local call via a trunk in another state.
Figure 7-2 Trunk Services on the Trunk Group Edit Page
To define trunk services:
Step 1 Open the Trunk Services dialog box on the Trunk Group edit page.
Step 2 Select the services that will be available for the selected trunk.
See the ShoreTel 6 Administration Guide for more information about the
Trunk Group edit page.
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 6 Administration Guide for more information about the
Site edit page and for instructions about computing Admission Control
Bandwidth.
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.
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.
NOTE 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?