Thanks Alex I suspected that no ack was being sent/received too. The invites are getting sent to the phone but nothing is coming back from the phone to the firewall. Does anybody know how I can sniff packets being sent and received to/from the phone and/or modem router the phone is connected to? I can't upload software to the modem/router or the phone (ie a packet sniffer). Can packets be sniffed from a linux box on the lan (please excuse my ignorance!)? If so can anybody point me to a resource that may help?
Thanks for any help Marcus Asterisk is not receiving replies to the INVITE - probably due to NAT issues. marcus wells wrote: > 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 > > > ------------------------------------------------------------------------
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