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 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 it! _________________________________________________________________ News, entertainment and everything you care about at Live.com. Get it now! http://www.live.com/getstarted.aspx -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20070910/346b399d/attachment.html
