Hello, When I try to register the same account with few delay, I receive an error message. But when pjsip tries to parse it, I receive the message : 01:38:04.989 sip_transport. Error processing 433 bytes packet from UDP ZZZ.ZZZ.ZZZ.ZZZ:5060 : PJSIP syntax error exception when parsing '' header on line 5 col 16: SIP/2.0 500 Registering glare condition Call-ID: kinTj5x3z17obvo8zvJ2jR-3NYHVIlJA CSeq: 39922 REGISTER From: <sip:XXXXXXXX@xxxxxxxxxxxxxx>;tag=pUB4p023fFPlJqyABM5ayJXbPMtl3WiT Retry-After: 10(Already Pending Register) To: <sip:XXXXXXX at freephonie.net>;tag=00-32573-0008fb8e-0fa94e940 Via: SIP/2.0/UDP 192.168.0.6:5060;received=YYY.YYY.YYY.YYY;rport=63911;branch=z9hG4bKPjTZoVgbPq56MSwZUL4H3COMH3Bfj0frNg Content-Length: 0 Is-it a problem in pjsip parser ? Or is it a problem on my SIP provider ? I'm using the last svn version. Thanks Samuel