Cisco 2911 dial peers based on calling number

[jdemuth@dce.k12.wi.us]

We currently have our CUCM configured to route 911 calls through Cisco 2901 voice gateways so that if a user in building A calls 911 the call is routed to the gateway in building A and out the POTS line for building A and if a user in building B calls 911 the call is route to the gateway in building B and out the POTS line for building B.  This is working as expected.

My question is, we have two adjacent buildings that share the same gateway and we have two POTS lines configured with caller ID info for each building so the 911 operator gets the correct location.  Is there a way on the gateway dial peer that I can route calls to the correct POTS line based on the CSS/Partition where the call originated? 

[Gregory Brunn]

You should be looking into CER. How did you get a carrier to advertise the physical address on a pots line to a place the line was not delivered to, I am surprised they did that.

But in theory you might be able to do this. I would have a device or line level CSS that would have a separate partition assigned for the 911 pattern.  You would need to apply a seperate CSS per building.

You can use a translation pattern for 911 to change it to something else and then use that as your pattern to send to the PSTN converting the number back into 911 as it went outbound. 

You will want to lab that out but should work so just throwing junk out there but 7911 could go to one port and 8911 could go to another. 

Once again I think you should look into a gateway per site or CER.  New requirements are coming out for 911 and you should be tracking you need the ability to provide 9911 , 911 to both work if you are utilizing a 9 prefix for outbound and onsite alerting Kari Law.  Ray Baum introduced other items as well. 

[Chris Deren]

Gregory is spot on (+5), if you are not going to pursue an E911 solution, his suggestion is optimal.  At the CUCM level separate the calls and use different prefix, this way when call hits the GW it will match different dial peer and route to different POTS, you would strip the prefix at the dial peer level to send out the call to 911.