I am currently implementing a new 911 solution that routes the call over a SIP trunk to the provider. Because this is internet based traffic and the critical nature of 911 we have a failover number that we would route to a long distance number to complete the call. I believe that I have the correct idea on configuration but wanted to see if anyone can assist.
We are running CUCM 8.6.2 and CER 10. If a 911 call is placed it routes to CER which then translates the call and sends it down back to Call Manager to mask the number. I have this configured to go to a 911-Route List. This route list has two groups. Group 1 is the SIP trunk. Group 2 is the PSTN gateways. The PSTN Route Group configuration in the Route List I have set to do a Called Party transform mask to the outside number.
Is there any flaw in my logic?
Thank you for the assistance.