Configure Asterisk to receive incoming SIP calls
If you want people from the outside world to be able to contact you via SIP, there are a few things you need to configure. First, in FreePBX setup, click General Settings on the left hand menu, scroll down and select Yes to Allow Anonymous Inbound SIP Calls . The Asterisk configuration file sip.conf defines the parameters for accepting incoming SIP calls. We need to make some changes to this file to correctly process incoming calls. From the Trixbox Admin web page, click Asterisk , Config Edit , then sip.conf on the left hand side. Modify the contents of this file so it reflects what is shown below. [general] bindport=5060 ; UDP Port to bind to bindaddr=0.0.0.0 ; (0.0.0.0 binds to all) disallow=all allow=ulaw allow=alaw allow=gsm allow=ilbc context=from-sip-external callerid=Unknown tos=0x68 ;------------- Ryan's Mods -------------- externip= 203.214.45.124 ;required behind NAT localnet= 192.168.0.0/255.255.255.0 ;required behind NAT fromdomain= lithiumblue.com canreinv