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ABNF for SIP Private Headers

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SIP Header — Resource-Share

3GPP TS 24.229 – Clause 7.2.13

resource-share =
"Resource‑Share"  HCOLON  r‑s‑param
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r-s-param =
r‑s‑supported /  r‑s‑no‑media‑sharing /  r‑s‑media‑sharing /  r‑s‑other
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r-s-supported =
"supported"  [ SEMI  origin ]  *( SEMI  generic‑param )
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r-s-no-media-sharing =
"no-media-sharing"  SEMI  origin  *( SEMI  generic‑param )
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r-s-media-sharing =
"media-sharing"  SEMI  origin  SEMI  resource‑sharing‑rules  SEMI  timestamp  *( SEMI  generic‑param )
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r-s-other =
other-status  *( SEMI  generic‑param )
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other-status =
token
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origin =
"session‑initiator" /  "session‑receiver" /  other‑origin
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other-origin =
token
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resource-sharing-rules =
"rules"  EQUAL  DQUOTE  resource‑sharing‑rule  *( COMMA  resource‑sharing‑rule )  DQUOTE 
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resource-sharing-rule =
[ active-resource-sharing-rule ]
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active-resource-sharing-rule =
new‑sharing‑key  COLON  [ existing‑sharing‑key‑list ]  COLON  directionality
*( COLON  generic‑rule‑param‑value )
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new-sharing-key =
sharing‑key
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existing-sharing-key-list =
sharing‑key  *( SLASH  sharing‑key )
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directionality =
"UL" /  "DL" /  "UL‑DL" /  other‑directionality
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other-directionality =
token
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sharing-key =
token
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generic-rule-param-value =
token
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timestamp =
"timestamp"  EQUAL  1*DIGIT
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