[asterisk-users] Asterisk keeps sending invite to sip phone "No response to critical packet"

[marcus wells]

Hi there

I am wondering if anybody can help me illuminate a problem I am having with
my asterisk installation. I am using:

- IP phone (Siemens gigaset S685IP) behind a modem/router that has ports udp
5060 and 10000:10100 forwarded to the static ip of the IP phone
(192.168.0.3). This has to go to:
- modem that operates in half bridge mode (no nat) to a linux firewall (does
natting ip is 192.168.0.20) that has the ports above forwarded to the staitc
ip of the asterisk box (192.168.0.21 packaged version for ubuntu hardy).

This phone works fine with a commercial provider of viop (via asterisk), but
I can't get it to work with my install of asterisk in my remote network!

ngrep-ing traffic on the firewall shows asterisk continually sending invites
to the public ip of the ip phone.

I would be very grateful for any pointers of where to start. If you need sip
debug or ngrep info let me know and i'll reply with it. I've been beating my
head against this for some time now!

Thanks in advance

Marcus
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20091112/6773f7d7/attachment.htm