I had the same problem that Asterisk does not show registration info for my pjsip client. However, the pjsip client can make/receive calls after I initiate a call from pjsip (the first attempt fails, off course). Still registration info does not show all the time. Ahmad _____ From: pjsip-bounces@xxxxxxxxxxxxxxx [mailto:pjsip-bounces at lists.pjsip.org] On Behalf Of Nigel Hsiung Sent: 10/Sep/2007 6:10 AM To: Discussion forum for pjsip embedded/DSP SIP implementation Subject: Re: Question : PJSIP client with Asterisk or OPENSER SIP server _____ Hi, See comments below and hope it helps, Nigel Hi, Currently I'm developing VOIP System. I'm using PJSIP API to develop a SIP softphone on Windows Mobile 5.0. Before that, I'm using OPENSER SIP server as server, everything works fine for registration, call... audio streaming. For some reason, I need to change to asterisk as SIP server. When server change the SIP client that developed from PJSIP works badly. Here below is the description of structure: - OPENSER/Asterisk is the SIP server that installed in linux behind NAT A. - Desktop install X-lite behind NAT A. - Pocket PC install PJSIP SIP behind NAT B. Following are problem i face during testing period: Question 1: 1. Asterisk can be SIP server, SIP proxy? Asterisk chan_sip can work as a (limited) sip server. 2. Do I need OPENSER SIP server together with Asterisk. OR Asterisk alone will be fine? Asterisk alone is fine unless u want to use TCP/TLS. Question 2: Here is the question regard registering the account to Asterisk. - several account has created under sip.conf. For X-lite: 1. registration account is fine, when i check asterisk with command "sip show peers" the host and port are listed with correct IP address and port. For PJSIP SIP : 2. when registering an account, the account registered successfully with an reply of 200 OK response message. 3. Yet when i check asterisk server with command "sip show peers" , the host and port are UNDEFINED. As a result when i call other SIP account, it was NOT FOUND message. PJSIP is behind NAT B while Asterisk server is behind NAT A. Try PJSIP behind NAT A and i think it'll work. Normally asterisk would not allow a client to register from a different subnet. I don't have any ideal what course this issue.... Someone knows what happen around? Im' new to VOIP, seeking some advice. Thanks _____ Call and stay connected with your friends and family for free. Seen and be heard with high-definition video calls on Windows Live Messenger. Try <http://www.get.live.com/messenger/features> it! _____ Call and stay connected with your friends and family for free. Seen and be heard with high-definition video calls on Windows Live Messenger. Try <http://www.get.live.com/messenger/features> it! _____ Get news, entertainment and everything you care about at Live.com. Check <http://www.live.com/getstarted.aspx%20> it out! -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20070910/e1545063/attachment.html