RFC 3665, "Session Initiation Protocol (SIP) Basic Call Flow Examples", December 2003Source of RFC: sipping (rai)
Errata ID: 5294
Publication Format(s) : TEXT
Reported By: Yehoshua Gev
Date Reported: 2018-03-22
Section 3.1 says:
BYE sip:firstname.lastname@example.org SIP/2.0
It should say:
BYE sip:email@example.com;transport=tcp SIP/2.0
In Example 3.1, the URI of the Contact header field of the INVITE request (F1) containes a parameter "transport=tcp".
According to section 188.8.131.52 of RFC 3261, this URI should be used as the Request-URI for Bob sending requests within this dialog.
As there is no explicit text about omitting parameters from the URI, the Request-URI should contain the "transport=tcp" parameter.
Hence, the Request-URI of the BYE request (F5) should contain the parameter.
It seems that the this problem was reported some years ago in the sip-implementors list:
The same problem appear in other examples, specifically 3.2 and 3.6.