[Sip] Question on RFC3840/3841

Hi,

Chapter 9 of RFC3840 says:

"There are additional constraints on the usage of feature-param that
cannot be represented in a BNF. There MUST only be one instance of any
feature tag in feature-param."

Chapter 10 of RFC3840 says:

"Furthermore, there can only be one instance of any feature tag in
feature-param."

So, this means that the following is NOT allowed:

Accept-Contact: *;myTag,myTag

However, since an Accept-Contact header can contain multiple ac-values,
each with its own sets of ac-parameters (including feature-params), the
following should be allowed:

Accept-Contact: *;myTag, *;myTag

...or:

Accept-Contact: *;myTag
Accept-Contact: *;myTag

Correct?

Regards,

Christer

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