[general] port = 5060 ; Port to bind to (SIP is 5060) bindaddr = 0.0.0.0 ; Address to bind to (all addresses on machine) ;externip = X.X.X.X localnet = 10.251.4.0 localmask = 255.255.255.0 disallow=all allow=ulaw allow=alaw dtmfmode=auto ; If you need to answer unauthenticated calls, you should change this ; next line to 'from-trunk', rather than 'from-sip-external'. ; You'll know this is happening if when you call in you get a message ; saying "The number you have dialed is not in service. Please check the ; number and try again." context = from-sip-external ; Send unknown SIP callers to this context ;context = from-trunk callerid = Unknown tos=0x68