[Serusers] help with asterisk and SER

In using SER as proxy and asterisk as the PBX, do we need to define anything in either of these two to make asterisk send a response back to the SIP clients behind the proxy? We have a defined dialplan in extensions.conf in asterisk for recognizing dialed digits of 911 and play a recorded message, but I do not see any response from asterisk to the INVITE. Our softphone is X-lite and we are making it dial 911 which should be forwarded blindly to a preset port on asterisk via SER. This portion of the call works fine. But when the INVITE reaches asterisk, it does nothing. So, I wanted to know if asterisk needs to know about the SER or the X-lite user for accepting and processing the call besides the 911 dialplan definition which is defined as follows: exten => 911,1,Ringing exten => 911,2,Wait,30 exten => 911,3,VoicemailMain exten => 911,4,Goto(s,6) Thanks in advance. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com