[This is pre-release documentation and subject to change in future releases. This topic's current status is: Milestone-Ready]

Topic Last Modified: 2010-07-12

In order to deploy E9-1-1, you will first need to configure an emergency call voice route. For more information about creating voice routes, see Create a Voice Route. You may define more than one route if, for example, your deployment includes a primary and a secondary SIP trunk.

For more information about working with voice routes, see the Communications Server Management Shell documentation for the following cmdlets:

To configure an E9-1-1 Voice Route

  1. Open Communications Server Management Shell.

  2. Run the following cmdlet to create a new PSTN usage record.

    This must be the same name that you will use for the PSTN setting in the Location Policy. While your deployment will have multiple phone usage records, the following example uses “Emergency Usage”. For more information, see Configure PSTN Usage Records.

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    Set-CsPstnUsage -Usage @{add='EmergencyUsage'}
  3. Run the following cmdlet to create a new voice route using the PSTN usage record created in the previous step.

    The number pattern must be the same number pattern that is used in the Emergency Dial String setting in the location policy. A “+” sign is needed because Communicator adds “+” to emergency calls. "Co1-pstngateway-1" is the SIP trunk service ID for the Emergency Service Provider. The following example names the voice route “EmergencyRoute”.

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    New-CsVoiceRoute -Name "EmergencyRoute" -NumberPattern "^\+911$" -PstnUsages @{add="EmergencyUsage"} -PstnGatewayList @{add="co1-pstngateway-1"}
  4. Optionally, we recommend that you run the following cmdlet to create a local route for calls that are not handled by the Emergency Server Provider’s SIP Trunk. This route will be used if the connection to the Emergency Service Provider is not available.

    The following example assumes that user has “Local” usage in their voice policy.

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    New-CsVoiceRoute -Name "LocalEmergencyRoute" -NumberPattern "^\+911$" -PstnUsages @{add="Local"} -PstnGatewayList @{add="co1-pstngateway-2"}