Henry Devito wrote:
AS Far as I have seen the only way to send E911 Info is over PRI. We have
done the same thing with DID's as there is no way to send a different CSID
over standard T1, at least in our area.
Hi,
Not meaning to dig up an old thread, but I thought this was worth mentioning. Standard Wireline E911 Location information comes from a centralized DB called ALI (Automatic Location Identification) which is mapped to ANI (Automatic Number Identification). So as long as you have a technology that can transmit ANI, you can support E911. I believe * can do this.
Note that there are only a few technologies that require ALI to be sent from somewhere other than the ALI DB. For example, Cell phones today typically transmit their Lat/Long Coords. Go take a look at specs for cell phones today. You may be suprised to see that like over 70% of them have GPS chips in them!! (I was amazed)
As for ALI.. A lot of carriers allow you to outpulse digits on a T1 in such a way that you outpulse DNIS and then some code (* maybe) and then ANI.. I can't remember the convention, but I do NOT think it is standard (please correct me if I am wrong).
CAMA trunks are nasty creatures.. stay away. if you want to be able to provide 911 services, either buy it bundled from a CLEC or from your Incumbant provider (ILEC/RBOC). They will do the MSAG querriers and provide connectivity to the PSAPs. Something which you do NOT want to do..
-Brett
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