I use this in my sip.conf
[cmphone]
type = friend
secret = secret
username = 8523xxxxxxx
host = 202.0.179.3
fromuser = 8523xxxxxxx
authuser = 8523xxxxxxx
disallow = all
allow = ulaw
allow = alaw
qualify = yes
nat = yes
canreinvite = yes
context = from-cmphone
outboundproxy = 202.0.179.3
insecure = port, invite |