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ABNF Notation
ABNF for SIP Headers
(66 of 93)
SIP Header — Require
Section 20.32 of RFC 3261
and
ABNF in RFC 3261
Require
=
"
Require
"
HCOLON
option‑tag
*(
COMMA
option‑tag
)
; example:
;
Require: 100rel