Log in to the EMS web interface with administrator credentials.
From the Device menu, click the SBC name to administer.
Navigate to Domain Policies > Session Policies.
The system displays the administered session policies.
To disable the URN mapping, clear the Enable URN Mapping checkbox.
Navigate to Configuration Profiles > URI Groups.
In the application pane, click Add.
The EMS server displays the Add URI window.
Enter the appropriate values for Scheme and Type fields.
In the URIs field, enter a appropriate value for the URN Map.
Click Finish.
In the navigation pane, click Configuration Profiles > Routing.
The application pane displays the existing routing profiles. The content area displays the routing rules comprising a selected routing profile.
In the application pane, click Add.
Type a distinctive name for the new routing profile, and click Next.
Enter the requested information into the appropriate fields.
To use alternate routing, ensure that you set the Trans Expire field on the Timers tab from Configuration Profiles > Server Interworking to an appropriate short duration. Any request sent from the server times out if a response is not received within the time set as the transaction expiration timer. Therefore, alternate routing does not work if the Trans Expire field is set to the default value of 32 seconds.
Click Finish.
The application pane displays the new routing profile.
Note:
If Avaya SBC uses user part based routing for PSAP, resulting in multiple backend PSAP servers then a SigMa script is required by replacing the domain (for example, psap.com) with Avaya SBC IP address.
