hi,
Rfc 3840 says that if any feature tag is not present in contact header,
implies that particular UE may or may not support that feature tag.
1) But in the example given in rfc 3841,
methods = "INVITE,OPTIONS" and methods = "BYE" does not
match.
what could be the reason?
Is (What ever rfc 3840 says about feature tags) it not applicable to
feature values present inside quoted strings?
2) If not applicable, meaning that the absence of BYE in the first
methods (in point 1) implies UE does not support BYE, then what is the
need of negation for values,
as both (absence and negation) indicates the same.
ex: events = "!presence, msg-taker" (given in rfc 3840)
Please clarify my doubt.
Thanks in advance
pavan
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