asterisk1*CLI> exit
[root@asterisk1 ~]# cd /etc/asterisk
[root@asterisk1 asterisk]# cat sip.conf
; Note: If your SIP devices are behind a NAT and your Asterisk
;  server isn't, try adding "nat=1" to each peer definition to
;  solve translation problems.
[general]
port = 5060
bindaddr = 0.0.0.0
context = from-trunk
qualify=no
disable=all
allow=alaw
allow=alaw
allow=ulaw
allow=g729
allow=gsm
allow=slinear
srvlookup=yes



; 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-trunk ; Send unknown SIP callers to this context
callerid=Unknown
tos=0x68


; #, in this configuration file, is NOT A COMMENT. This is exactly
; how it should be.
#include sip_nat.conf
#include sip_custom.conf
#include sip_additional.conf
#include additional_a2billing_sip.conf

[root@asterisk1 asterisk]#