BERGANZ François wrote:
As I could see in the source, we don’t follow the RFCs. If I send an INVITE, kamailio response a “Giving a try” It isn’t in the RFCs! It is normaly “Trying”.
In SIP protocol semantics, only the status reply code (100) is relevant. Although there are conventional reply "reasons" in the RFC as well as canonical forms, variations on them are not, strictly speaking, violations of the RFC because they have no material effect on the state machine.