In you asterisk sip.conf: [general] externip=xxx.xxx.xxx.xxx ;ip address of your nat firewall (public ip) localnet=192.168.0.0/24 ; the local subnet where the asterisk box is
If you don't externip, externip will never be used, because asterisk won't know WHEN to use it. Also, define canreinvite=no in your sip phones sections, as was suggested above. Julian J. M. On Wed, 2 Mar 2005 23:26:56 +1100, Rudolf Ladyzhenskii <[EMAIL PROTECTED]> wrote: > Hi, all > > Still trying to get NAT working. > > I have following setup: > > PHONE 1 ------ * BOX > | > NAT/Firewall > | > | > NAT/Firewall > | > | > PHONE 2 > > Firewall next to phone 2 has all ports open. > Firewall next to Asterisk has open ports 5060 and 10000:20000. All of those > are forwarded to Asterisk box. > > Both phones succesfully register with Asterisk. (I had to add NAT=yes to > configuration of PHONE 2 in sip.conf to get this far). > Now, problems: > I can place a call from PHONE2 to PHONE1, but sound path is not established. > Calls from PHONE1 to PHONE2 can not be placed at all. (I assume that this is > because port 5060 is not forwarded to the phone at NAT/Firewall, but more on > it later). > > Looking at SIP debug info, Asterisk tries to use local address of PHONE2 > instead of its public IP. As a result, no info can be sent to it. > > I have tried to install SIPROXD on the NAT/Firewall close to Asterisk box, > but this did not help. > > Now, we have tried to use one of the commercial VoIP service at PHONE2 > location. We had to use their phone and it worked just fine without any > alterations to NAT/Firewall device. I am pretty sure that they use SIP, so > they did resolve the problem somehow. Sorry, there is no technical info > available on this service. > > Did anyone succeeded in doing this setup? I know, IAX is a better way, but I > can not setup many Asterisk boxes. > > Basically, I am doing it for a friend. He is working for a small medical > company. They have number of offices that are not open every day and offices > are too small to put Asterisk box in each one. There will be 1-3 IP phones > in each office, except central one. Central one will need Asterisk, the rest > should be on their own. > > Any help is greatly appreciated. > > Thanks, > Rudolf > > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > _______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users