2009/11/27 BERGANZ François francois@acropolistelecom.net:
Ok, I understand, but now my question can be: why we don't follow the RFC example (Trying)?
An example in a RFC is *not* a specification, but just an example. If you inspect the BNF grammar in RFC 3261 for 100 response you will realize that it allows (as any other response code) *any* reason text. That's all.