Olle, thanks for your quick reply. I believe that PJSIP should work well, :-), I'm trying to figure out what wrong is on my side. I tested two X-Lite here inside company network, they worked fine. ? Acutually one SIP guy here mentioned that does PJSIP support "a=nortproxyyes" in SDP. Acoording to this guy, it will enable SIP client to commuicate with other SIP within local network. If PJSIP supports it, my PJSIP client might be configured in a wrong way. ? thanks wwzhdo --- On Thu, 9/25/08, Olle Frimanson <olle.frimanson at keystream.se> wrote: From: Olle Frimanson <olle.frimanson@xxxxxxxxxxxx> Subject: RE: what SIP server and SIP client shall I use to test PJSIP To: wwzhdo at yahoo.com, "'pjsip list'" <pjsip at lists.pjsip.org> Date: Thursday, September 25, 2008, 10:40 AM Hi, we have over the last year tested PJSIP against several different SIP servers and PBX?s (OpenSER, Avaya, Brekeke,?..) and against several different phones (Snom, Polycom, Grandstream, Eyebeam, ?.) ? So far it all works well, at least for us. Are you sure this is not a configuration issue, either on PJSIP or on server? ? If you are behind NAT a STUN server and enabling ICE will help a lot, but check that the other clients support ICE as well. ? BR/Olle ? From: pjsip-bounces@xxxxxxxxxxxxxxx [mailto:pjsip-bounces at lists.pjsip.org] On Behalf Of w zl Sent: den 25 september 2008 19:06 To: pjsip at lists.pjsip.org Subject: what SIP server and SIP client shall I use to test PJSIP ? Hello, ? It's my first post :-) ? It's a quite stupid question, what SIP server and SIP client do you guys use to test PJSIP client against? I'm asking this question because I tested PJSIP client against iptel sip server, X-Lite sip client and some other sip clients, but none of them really worked perfectly with PJSIP, especially when I tested inside company firewall. Any suggestions are?welcome! ? thanks! wwzhdo ? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20080925/5c95dadf/attachment.html>