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ABNF for SIP:  Headers

 

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(27  of  92)

From   =
( "From"  /  "f" )   HCOLON   from-spec

; examples:
;  From: Alice <sip:alice@atlanta.example.com>;tag=9fxced76sl
;  From: "Anonymous" <sip:anonymous@anonymous.invalid>;tag=1928301774

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from-spec   =
( name‑addr  /  addr‑spec )   *( SEMI   from‑param )
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from-param   =
tag-param   =
"tag"   EQUAL   token
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