[general] context=default ; Default context for incoming calls allowoverlap=no ; Disable overlap dialing support. (Default is yes) bindport=5060 ; UDP Port to bind to (SIP standard port is 5060) bindaddr=0.0.0.0 ; IP address to bind to (0.0.0.0 binds to all) srvlookup=yes ; Enable DNS SRV lookups on outbound calls qualify=30000000 externip=iphere ; Address that we're going to put in outbound SIP localnet=192.168.1.0/255.255.255.0 ;op school ;externip= ;localnet=10.0.0.0/255.255.255.0 nat=yes ; Global NAT settings (Affects all peers and users) canreinvite=no ; Asterisk by default tries to redirect the ; RTP media stream (audio) to go directly from ; the caller to the callee. Some devices do not ; support this (especially if one of them is behind a NAT). ; The default setting is YES. If you have all clients ; behind a NAT, or for some other reason wants Asterisk to ; stay in the audio path, you may want to turn this off. ; In Asterisk 1.4 this setting also affect direct RTP ; at call setup (a new feature in 1.4 - setting up the ; call directly between the endpoints instead of sending ; a re-INVITE). ;directrtpsetup=yes ; Enable the new experimental direct RTP setup. This sets up ; the call directly with media peer-2-peer without re-invites. ; Will not work for video and cases where the callee sends ; RTP payloads and fmtp headers in the 200 OK that does not match the ; callers INVITE. ;canreinvite=nonat ; An additional option is to allow media path redirection ; (reinvite) but only when the peer where the media is being ; sent is known to not be behind a NAT (as the RTP core can ; determine it based on the apparent IP address the media ; arrives from). ;canreinvite=update,nonat ; Yet a third option... use UPDATE for media path redirection, ; instead of INVITE. This can be combined with 'nonat', as ; 'canreinvite=update,nonat'. It implies 'yes'. [1234] type=friend auth=md5 username=1234 secret= callerid="First Extension" <1234> host=dynamic nreinvite=no canreinvite=no disallow=all allow=gsm allow=ulaw allow=alaw nat=yes [2345] type=friend auth=md5 username=2345 secret= callerid="Second Extension" <2345> host=dynamic nreinvite=no canreinvite=no disallow=all allow=gsm allow=ulaw allow=alaw nat=yes