[Asterisk-Users] Asterisk E911?

[Kevin P. Fleming]

Rich Adamson wrote:

> To avoid legal issues down the road, I'd suggest handling it via a
> local pstn line (one way or another), and install a Red Phone with
> a normal pstn line for emergency use. (The pstn line for the Red
> Phone 'could' be used for incoming faxes as well, and when combined
> with something like an spa3000, will handle * to pstn 911 calls.)

If you provide a special line for E911 access, just absolutely _must 
not_ put anything on that line that will answer the incoming calls. 
Return calls from the E911 operator _must_ be able to ring that phone 
and be answered without special prior arrangements (turning off a FAX 
machine, etc). If you don't provide for this, you are asking for 
liability issues when someone gets disconnected and the operator cannot 
contact them.

In fact, I will not provide E911 access for any of customers unless they 
  allow us to provision a separate, unpublished DID number that we use 
to report as the CLID to the PSAP, and that when incoming calls come in 
it rings all the phones in the office immediately. There is no value in 
providing a CLID to the PSAP that when called back answers with an IVR 
and dumps the operator into a queue or anything similar.