Configure 911 on IP phones at multiple locations

[thildreth]

I am going to be deploying 2004 and 1120/1140 IP phones in our various locations. These locations have phone systems in them now that will be taken out and replaced by the IP phones. I have the locations main numbers remote call forwarded to a DID number in our main CS1000M system. That DID number then routes the calls out to an auto attendant where the phones are configured for each location. I need to be able to configue 911 on each phone so that when the user picks up the phone and dials 911 it will display their local (old main) telephone number. Currently, when my test location picks dials 911, I see it in the CS1000M showing their old main number being sent out (I programmed it in ERL and assigned the ERL number to the TN). But when 911 answers the call and we ask what number they see - they say the see the main number for the CS1000M. Do I need to configure ECL as well or is there another/easier way to manage this process?

 

[vnetmanager]

It sounds like your trunks at the main site are tagged to send out only the main number associated with the trunks group in the Central Office. Do DID numbers get presented as caller ID when you dial out on a normal call? The best way I have found (I have 20 physical locations), is to use the CLID table to send out a different phone number for each physical address. That can be the old number for each place if the carrier has not changed billing information. If they have changed the billing info, you may be stuck paying the carrier for a database that deciphers certain numbers to addresses (that's what I do).

JB

 

[thildreth]

Hi Vnetmanager!
I have the CLID configured on the phones to put out the locations old main number and that works fine (no DID's are pushed out on caller ID - only the local main number). But if the location calls 911, the dispatcher says the call displays to them as it is coming from the main location (where the phone is registered to) and not the physical location.

 

[vnetmanager]

We had the same problem. You really have 2 options, both of which cost money; purchase a 3rd party e911 system to send all 911 calls to - this system will have a database that has to be maintained, or pay the carrier for their flavor of e911 - this too will require a maintained database. My config is like this: Building 1 has identified one main 911 call back number. All phones in building 1 have this number in their CLID for ESA. In the carrier's database, when they see this particular phone number, it gets tagged with the building 1 address and then is shipped to the PSAP. Building 2, and others, are set up the same way. Avaya/Nortel just does not have an easy way (that I have found) to do this.

JB