How to setup SIP trunks in Asterisk?

Edit sip.conf (/etc/asterisk/sip.conf) in your favourite editor and add the following example configuration: [didforsale_1] type=peer host=209.216.2.211 nat=no canreinvite=no disallow=all allow=ulaw allow=g729 dtmfmode=rfc2833 insecure=very context=from-trunk...