freewilly

Pretty good quality.
It was able to register on obi110 and a Panny sip phone.
Never be able to register on Asterisk 1.8

Any advice will be appreciated.

Got this error.
[Feb 14 23:52:07] NOTICE[4951]: chan_sip.c:12947 sip_reg_timeout:    -- Registration for '36xxxxxxhk@s2hkbntel.net' timed out, trying again (Attempt #87)

sip.conf
[general]
context = default
bindport = 5060
bindaddr = 0.0.0.0
pedantic=no
autocreatepeer=no
nat=no
qualify=yes
localnet=192.168.1.0/255.255.255.0
externhost=xxx.dyndns.org
externip=xxx.dyndns.org

register => 36xxxxxxhk:xxxxxx@s2hkbntel.net:5060/36xxxxxx


[hkbn2b]
type = peer
username = 36xxxxxxhk
secret = xxxxxx
port = 5060
host = s2hkbntel.net
fromuser = 36xxxxxxhk
fromdomain = s2hkbntel.net
canreinvite=no
insecure=very
disallow = all
allow = g729
allow = ulaw
allow = pcma
dtmfmode=rfc2833
context = from-hkbn2b
nat=yes