Thanks Klaus. I was making a call using pjsua-lib make_call, with a destination like this: sip:account at domain;user=phone, and the sip server was not accepting this. It worked fine when I changed to <sip:account at domain;user=phone>. The ;tag=1335... was placed after the >. Rafael Maia -----Original Message----- From: Klaus Darilion [mailto:klaus.mailinglists@xxxxxxxxx] Sent: sexta-feira, 10 de Dezembro de 2010 15:31 To: pjsip list Cc: Rafael Maia Subject: Re: Possible issue with From an To headers Am 10.12.2010 16:20, schrieb Rafael Maia: > Sorry, a small correction: > > REGISTER > > . > > From: *<*sip:alice@domain*>*;tag=12345. From: sip:alice@domain;tag=12345 is perfectly valid too. <> is only needed if there is a display name, or URI parameter, e.g: From: Lovely Alice <sip:alice@domain>;tag=12345 From: <sip:alice@domain;foo=bar>;tag=12345 regards Klaus
