As a wireless carrier I've already had to address this issue.
E911 service uses ANI for identity.
In order to set up your own E911 service or interface you need to be viewed as a
carrier.
The cable industry is addressing the E911 issue with a proxy solution with
individual subscriber phones. Reverse pings, traceroute, IP identification or
MAC address identification.
In the wireless world, this data is trasmitted via Feature Group D trunks, or
via SS7. The packets are called ESRK and ESRD. It goes to a 911 router and then
to the PSAP.
Any way, your only "simple" solution at this time is to make a choice:
1) Go without "identification". Your "remote" office dials
911 and you translate it to a 10 digit number at the police department that
answers emergency calls. (You don't have to dial "911") When this
happens, they ask you who you are. If you can't talk, you're SOL.
2) Keep one "emergency" line at each remote location. It can even be
measured service if the LEC offers it. It's only used for 911 calls.
The last thing that you want is a law suit brought against your customer (and
later your company) for someone bleeding to death while they try to locate.
James Taylor
MetroTel
903-793-1953
---------- Original Message ----------------------------------
From: Martin Pycko <martinp@digium.com>
Reply-To: asterisk-users@lists.digium.com
Date: Mon, 21 Jul 2003 12:05:38 -0500 (CDT)
>Isn't that enough to set up a proper Caller ID NAME ?
>
>Martin
>
>On Mon, 21 Jul 2003, Alex Lopez wrote:
>
>> I have a client that would like to use asterisk to link their multiples
locations together. However, if a person in the remote office dials 911, How
can the 911 operator determine WHERE the emergency is?? Since all calss would
be going out of the PRI in the main location, the police/fire trucks will show
up at our COLO!!
>>
>> I know that there are some that are doing this multi site setup, how
did they handle 911 services??? For now I am quoting a one port FXO card to be
placed in each location, that will in turn connect to a POTS line. However, even
though we can use it for the alarm system and it is a kind of insurance I would
like to do away with it!
>>
>> _______________________________________________
>> Asterisk-Users mailing list
>> Asterisk-Users@lists.digium.com
>> http://lists.digium.com/mailman/listinfo/asterisk-users
>>
>
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>
--
James Taylor
jltaylor@metrotel.net
903-793-1953
--