Hi List, I want the SIP URI that I use for a call to contain some parameter and a header. I have make a test with this SIP URI, (the uri parameter and header are irrelevant): sip:test at 192.168.13.66>;method=REGISTER?to=alice%40atlanta.com But I get this error: ERROR: 11:57:29.803 sip_transport. !Error processing 370 bytes packet from UDP 192.168.13.115:5060 : PJSIP syntax error exception when parsing ' ' header on line 4 col 45: OPTIONS sip:test at 192.168.13.66 SIP/2.0^M Via: SIP/2.0/UDP 192.168.13.115:5060;rport;branch=z9hG4bK2058690507^M From: <sip:373@192.168.13.192>;tag=704541626^M To: <sip:test at 192.168.13.66>;method=REGISTER?to=alice%40atlanta.com^M Call-ID: 687795537^M CSeq: 20 OPTIONS^M Accept: application/sdp^M Max-Forwards: 70^M User-Agent: Linphone/3.5.2 (eXosip2/3.3.0)^M Content-Length: 0^M ^M The syntax error is in the '?' of the 'To:' line. I have try to make a call using parameter and header separatedly: First with : sip:test at 192.168.13.66>;method=REGISTER and the with: test at 192.168.13.66?to=alice%40atlanta.com And there is no syntax error, so it seems to me like it is not possible to add a uri parameter and a header in the same SIP URI. Is that true? Thanks! -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20141210/af07db83/attachment.html>