Hi, While trying to register on sip,we receive following error in via field in some of the networks sip_transport. Error processing 512 bytes packet from UDP 64.39.3.65:5060 : PJSIP syntax error exception when parsing '' header on line 2 col 34: SIP/2.0 100 Trying Via: SIP/2.0/UDP 192.168.2.2:9240:10295;rport=10283;branch=z9hG4bKPjMWhFVCJ3qeFsYIMQyF-VidXzBnqtHv3I From: <sip:8626589@xxxxxxxxx>;tag=DHXzkVqG4NxRnEwLB39xaDkOkHri5EOJ To: <sip:8626589 at spokn.com> Call-ID: 2hHte6HFFLtkdjqbOa1T0yGcAlxZwr0X CSeq: 60799 REGISTER Server: OpenSER (1.2.3-notls (i386/linux)) Content-Length: 0 Warning: 392 64.39.3.65:5060 "Noisy feedback tells: pid=1980 req_src_ip=120.60.142.113 req_src_port=10283 in_uri=sip:spokn.com out_uri=sip:spokn.com via_cnt==1" due to this we are not able to register on server. But nokia e71 in build sip client able to register on same network. does anyone have solution for this? Please find attached pjsip log. -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: 11.15.44_8626589_iphone_log.txt URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20100712/01977f08/attachment-0001.txt> -------------- next part -------------- Regards Mukesh