PRI. This site is located in Canada.

Ok so my Telco does support E911. Do I contact ATT directory or how do I start this process?

I am not the original poster, but was coming online to ask a similar question.... not trying to steal this thread but seem appropriate...

Is this the same as AT&T's:

"Locator ID Lite" (or Loc ID Lite)

service?

Basically, you can setup in Cisco UC (CME in my case) Emeregency Response Locations (ERL) and associate a DID number with that ERL. Then pay AT&T to associate an address (and or floor, area in a building, etc) to DID number.

NOTE: The "Lite" service is a one-time setup product (associate location with number) and the full product allows for customer to dynamically update the association.

So this allows Cisco UC to present the DID as the called number when dialing 911. Then the PSAP will get the ERL info and respond to the correct location.

I am looking to set this up and it sounds like you have an experience similiar to ours... AT&T wants us to use this "Locate ID Lite".

Senerio ...

Customer has 2 sites in the same state but different counties (as such different PSAP). We have each site connected to a PRI and connected together via a point-to-point T1 (WAN). We are looking to purchase the "Loc ID Lite" service and would like to use the "other site" PRI as a backup. In other words if Site A's PRI drops, E911 calls would be routed out Site B's PRI.

AT&T seems to think it will work (they are no experts on this ... at least who I am dealing with). It sounds like you are saying this would not work.

What is your experience ... does AT&T not route it to the correct PSAP? Or is the ERL info not given? What happens?

The problem I had was the customer had the following:

Almadeda County - Host location for CUCM/VGs/PRIs, etc.

San Mateo County - Remote Office that uses all PRIs, etc from the host location Alameda County.

We tried to input the address for San Mateo office off the Alameda PRI and ATT rejected it in their database. I have not completely understood why, but apparently (from my understanding) the PSAP (911 operators) will not transfer the call between Counties.??? Cisco seemed to verify this as well. But if you find other information out, please let us know! It seems to be a huge problem for everyone who sells CER or even wants to pay for the Inform 911 from ATT. And ATT has no brains what so ever around this.

If LOC ID Lite works, then this would solve the problem?

Its a little late, but the only way the scenario described would work is if a Selective Router is being utilized in your area. A Selective Router can route 911 calls to different PSAPs based on the Calling Number (in this case ELIN/DID). The only caveat is all of the PSAPS need to be serviced by the same Selective Router. This works well in major metropolitan areas, where there are many small PSAPs but won't work when you start crossing certain boundaries, not limited to but sometimes including county lines, states lines, etc...

Can you request this from the LEC or how does this work with the PSAPs? Would ATT know what we are talking if we request Selective Router?

Yes this is what we ended up deterining in our case. We were going between LATAs and no way would it work (as we did much more pushing with AT&T on the issue). We are going to use e911 lite on the campus with several buildings (builing / floor info passed) with a few POTS 911 failovers (generic campus info, no building specific info) and the other campus is small enough where e911 is not required so we are just routing calls as normal for 911 out only the local site's PRI and a failover POTS line.

Ameritech (AT&T) just doesn't have their act together, this is really pathetic IMHO.