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ABNF for SIP Headers

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SIP Header — Policy-Contact

RFC 6794 – Section 4.4.5.2

Policy-Contact =
"Policy‑Contact"  HCOLON  policyContact‑info  *( COMMA  policyContact‑info )
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policyContact-info =
LAQUOT  policyContact-uri  RAQUOT  *( SEMI  policyContact‑param )
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policyContact-uri =
( SIP‑URI /  SIPS‑URI /  absoluteURI )
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policyContact-param =
( "non‑cacheable" /  policyContact‑alt‑uri /  generic‑param )
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policyContact-alt-uri =
"alt‑uri"  EQUAL  hostname
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