I’m working on setting up a SIP trunk to be used just for E911 termination. So, I have a chan_sip trunk called
emergency_trunk set up with a very minimal configuration (below). A call dialed to ‘911’ should be sent to
[email protected]. However, when calls go out the INVITE line gives an address of
911%[email protected]. That is, the phone number dialed is having
@trunkname added onto it somewhere internally.
This seems like it could be related to SIP proxy support or similar, but I don’t have anything like that configured.
Here’s the PEER details for the SIP trunk called
host=sip.provider.com type=peer disallow=all allow=ulaw,g729 qualify=yes