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Setting Up Basic Routing for Emergency Telephone Numbers

Microsoft Office Communications Server 2007 and Microsoft Office Communications Server 2007 R2 will reach end of support on January 9, 2018. To stay supported, you will need to upgrade. For more information, see Resources to help you upgrade your Office 2007 servers and clients.

 

Topic Last Modified: 2015-03-09

Setting up basic routing for emergency telephone numbers (such as 999 or 911 used in this example) requires that calls to the emergency number be routed to the gateway local to the location of the user. This can be accomplished using the following configuration.

Table 1. User Policy

User policy Phone usage

Default Calling Policy

Local

GlobalPSTNHopoff

Redmond Calling Policy

Redmond911

Local

GlobalPSTNHopoff

Redmond Local Policy

Redmond911 RedmondLocal

Dallas Calling Policy

Dallas911

DallasUsers

GlobalPSTNHopoff

Table 2. 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

Redmond 911 route

^911$

Redmond911

Red-GW1

Dallas 911 route

^911$

Dallas911

Dallas-GW1

  • A new policy called Redmond Calling Policy is created and a phone usage of Redmond911 is added to it. Similarly, a phone usage of Dallas911 is added to the Dallas Calling Policy.

  • Emergency telephone calls made from users with a phone usage of Redmond911 are routed via Red-GW1 using the Redmond 911 route, and users with a phone usage of Dallas911 are routed via Dallas-GW1 using the Dallas 911 route.

The previous configuration illustrates the flexibility where the same number is routed via different gateways based on the user who is calling.