[Asterisk-Dev] E911?

Ray Burkholder ray at oneunified.net
Sat Jan 17 16:19:53 MST 2004

Quoting Nathan Littlepage <nathan at iwantka.com>:

> The majority of E911 trunking is CAS MF. I just went through the routine
> of setting it up.
> > 
> > 911 centers use special lines to connect to the public network either
> > analog/T1 CAMA trunks or digital PRIs
> > 
> > I took a quick look at the new chan_zap.c from the CVS.
> > The implementation seems to be of the analog CAMA trunk kind.
> > CAMA trunks transmit the ANI (more or less Caller ID) as a 
> > formatted MF tone
> > string to the 911 equipment.

Would you be able to provide some background info as to hardware selected, 
provisioning details, config file info, how difficult it was, ....


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