Think u for ur reply. Until now, i have no idea what the problem is , but i think maybe "It Sounds like an ip resolve problem". Now the client again can register to the NGN Server without any modification to the computer. By the way, i use the field "Expires: 0" to unregister to the NGN Server, and it works most of time. Best Regards, xutm 2009/11/14 feiwang ya <yafeiwang99 at gmail.com> > Hi, > The header of expire is 0.That means become invalid immediately after > registration.This is equivalent to unregistered the account immediately > after registration. > The header of expire is expected to be non-zero. > In my registration it is 300. > > Best Regards > > 2009/11/13 xutm <xutom2006 at gmail.com> > >> Hi all, >> I am using pjproject-1.1 to develop an IM client. Most of time it can >> successfullly register to the NGN Server using my computer, But just now, it >> fails: the client just repeatly send out the REGISTER packets, without the >> response from NGN server, but at the same time the IM client can >> successfully register to my reSIProcate Server(SIP Proxy Server). If I use >> the virtual PC and run the IM client in it, it can register to the NGN >> Server and the reSIProcate Server . I think there maybe something wrong with >> my computer. But if there do exists something wrong, why the IM client can >> register to my reSIProcate Server? The attach file is the log of the pjsip. >> Can somebody help me ? >> >> Best Regards, >> xutm >> >> _______________________________________________ >> Visit our blog: http://blog.pjsip.org >> >> pjsip mailing list >> pjsip at lists.pjsip.org >> http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org >> >> > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20091114/0131dac7/attachment.html>