[vp.thinktel.ca] disallow=all allow=ulaw dtmfmode=rfc2833 fromdomain=vp.thinktel.ca host=159.18.161.67 username=XXXYYYZZZZ # your SIP authentication number secret=@@@@@@@@ # your SIP authentication password nat=yes # or nat=no if using publicly accessible IP insecure=invite,port type=fri…