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[Sip] Conflict in Accept header grammer



All,
 
Accept Header syntax is like this

accept-range = media-range *(SEMI accept-param)

media-range = ( "*/*"

   / ( m-type SLASH "*" )

   / ( m-type SLASH m-subtype )

   ) *( SEMI m-parameter )

accept-param = ("q" EQUAL qvalue) / generic-param

generic-param = token [ EQUAL gen-value ]

gen-value = token / host / quoted-string

m-parameter = m-attribute EQUAL m-value

m-attribute = token

m-value = token / quoted-string

Here how to distinguish b/w the m-parameter in media-range and generic-param in accept-param.

 

Thanks,

lakshmi