> Unfortunately, I did not get your explanation clearly > > What is the errata?
See the following link. https://www.rfc-editor.org/errata_search.php?rfc=5502 > What type of brackets need to be used for this case? RFC 5502 contains PServedUser-value = name-addr / addr-spec. See name-addr ABNF from RFC 3261 which uses RAQUOT and AQUOT. name-addr = [ display-name ] LAQUOT addr-spec RAQUOT addr-spec = SIP-URI / SIPS-URI / absoluteURI RAQUOT = ">" SWS ; right angle quote AQUOT = SWS "<"; left angle quote > 3. Updates to RFCs defining SIP Extension header fields > > So is it already a standard? Since the errata hasn't been approved and RFC 5502 hasn't officially been updated, the answer is no. However without such a rule, the sender and receive may not agree upon how the header should be decoded when name-addr is not used and there is a semicolon before the '@'. Thus from a send perspective, it mostly just depends upon if you want to send an ambiguous header or one that can be decoded without ambiguity. _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
