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ABNF for SIP Headers

(92  of  93)

SIP Header — Warning

Section 20.43 of RFC 3261  and  ABNF in RFC 3261  —  IANA

Warning =
"Warning"  HCOLONwarning‑value  *( COMMAwarning‑value )

; example:
; Warning: 301 isi.edu "Incompatible network address type 'E.164'"

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warning-value =
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warn-code =
3DIGIT

; 300  Incompatible network protocol:
; One or more network protocols contained in the session description are not available.

; 301  Incompatible network address formats:
; One or more network address formats contained in the session description are not available.

; 302  Incompatible transport protocol:
; One or more transport protocols described in the session description are not available.

; 303  Incompatible bandwidth units:
; One or more bandwidth measurement units contained in the session description were not understood.

; 304  Media type not available:
; One or more media types contained in the session description are not available.

; 305  Incompatible media format:
; One or more media formats contained in the session description are not available.

; 306  Attribute not understood:
; One or more of the media attributes in the session description are not supported.

; 307  Session description parameter not understood:
; A parameter other than those listed above was not understood.

; 308  Incompatible language specification:
; Requested languages not supported. Supported languages are [list of supported languages]; supported media are: [list of supported media].
; [RFC 8373]

; 330  Multicast not available:
; The site where the user is located does not support multicast.

; 331  Unicast not available:
; The site where the user is located does not support unicast communication (usually due to the presence of a firewall).

; 370  Insufficient bandwidth:
; The bandwidth specified in the session description or defined by the media exceeds that known to be available.

; 380  SIPS Not Allowed:
; The bandwidth specified in the session description or defined by the media exceeds that known to be available.
; [RFC 5630]

; 381  SIPS Required:
; The UAS or proxy cannot process the request because the SIPS scheme is required.
; [RFC 5630]

; 399  Miscellaneous warning:
; The warning text can include arbitrary information to be presented to a human user or logged. A system receiving this warning MUST NOT take any automated action.

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warn-text =
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