Source-Based Routing

Communications Server 2007

There are certain situations where the administrator would like to limit the gateway that is used for calls from users from a particular location. The following configuration illustrates how this may be accomplished for a situation where an administrator would like to limit calls from Dallas users to always exit out of the Dallas gateway.

Table  SEQ Table \* ARABIC 93 User Policy

User Policy Phone Usage

Default Calling Policy

Local

GlobalPSTNHopoff

Redmond Local Policy

RedmondLocal

Dallas Calling Policy

DallasUsers

Table  SEQ Table \* ARABIC 94 Routes

Route Name Number Pattern Phone Usage Gateway

Redmond Local Route

^\+1(425|206|253)(\d{7})$

Local

RedmondLocal

Red-GW1

Red-GW2

Dallas Local Route

^\+1(972|214|469)(\d{7})$

Local

Dallas-GW1

Universal Route

^\+?(\d*)$

GlobalPSTNHopoff

Red-GW1

Red-GW2

Dallas-GW1

Dallas Users Route

^\+?(\d*)$

DallasUsers

Dallas-GW1

  • Administrator creates a policy called Dallas Calling Policy and assigns a phone usage of DallasUsers to it.
  • All users in Dallas are assigned the Dallas Calling Policy.
  • For a call originated by a user with this policy, since the only route that contains this policy is the Dallas Users Route, Dallas-GW1 is always selected as the egress gateway for all calls.
  • The previous configuration example does not preclude users from other locations (for example, with Default Calling Policy) from using the gateway located in Dallas.
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