911 based on location not SIP circuit location

[phifdd4305]

Hello,

Here's my scenario; I have 3 buildings that are within a couple miles of each other. Each building has CUCM & SME 11.5 subscribers, the main building where the AT&T sip/bvoip circuits terminate to has the publisher a sub, CUBE & SME. I have MPLS circuits between the other buildings so how do I setup 911 for all the buildings so that the 911 dispatch sends to the right building? I was told that I could have AT&T set specific addresses for a pre-assigned DID so when I set up 911 to show that as the caller id it would show the correct address but of course my AT&T rep has no clue. Any ideas would be helpful. 

[Gregory Brunn]

This is the situation where you would take over the PS ALI database and assign those ANI or Calling Numbers to a specific location. You typically have to enter into an agreement with the carrier to do this.

Might want to look into Cisco Emergency Responder or Redsky for a better way to do E911.