======================================================== ----Original Message----- From: Jiang zhou [mailto:zjiang at sipod.com] Sent: Thursday, September 02, 2004 6:06 PM To: Richard; serusers at iptel.org Subject: Re: [Serusers] User ser+nathelper+rtppoxy as outbound server
I think the normal Nathelper+rtpproxy will have a bug for public ua call a nated ua. ua1(pblic ip) ------->ser(nathelper+rtpproxy)----->nat----->ua2
ua2 can call ua1. The ua2's invite sdp can be modified by nathelper and rewrite the ip/port to rtpproxy's ip/port . So ua1 send voice to rtpproxy to ua1
Ua1 can't call ua2. Ua1's Invite message will fail in nat_uac_test("3") test. So ser dos't setflag for this invite and don't use the rtpproxy. Ua2's reply can't be modified by nathelper. So Ua1 find the reply with a private ip. So ua2 can't send voice to ua1, only ua1 send voice to ua2.
Is it right? If use a ser+rtppoxy as a outbound server, I can resovle this issue.
===========================================================
I encountered into exactly the same problem: UA1 ->SER->NAT->UA2 nathelper does not forces RTP relay upon INVITE (because there is no need), and 200 OK SDP won't be rewrited (lookup mode). Help me please whether I can resolve this problem in configuration file. Thanks a lot, Tina
--------------------------------- Do you Yahoo!? Take Yahoo! Mail with you! Get it on your mobile phone.