Public Fields

  Name Description
Accepted Refer accepted.
AddressIncomplete The Request-URI is incomplete.
AlternativeService The call was not successful, but alternative services are possible.
Ambiguous The Request-URI was ambiguous.
BadCallLeg The call leg (that is, call context) does not exist or has been cleaned up.
BadEvent The server could not process the event package specified in an "Event" header field.
BadExtension Bad extension.
BadGateway Bad gateway.
BadRequest The request could not be understood due to malformed syntax.
BusyEverywhere The operation failed.
BusyHere The receiving system was contacted successfully but it is currently not willing or able to take additional calls.
Conflict The request could not be completed due to a conflict with the current state of the resource.
DeclineAll The user wants to decline a signaling session everywhere including call routing.
DeclineEverywhere The client wants to decline a signaling invitation at all forked locations.
DoesNotExistAnywhere The user does not exist anywhere.
ExtensionRequired A required extension is missing in the Supported header of the request.
Forbidden Forbidden.
Forwarded The provisional Call-Forwarded response.
InternalServerError Internal server error.
IntervalTooBrief The expiration time of the resource request is too short.
LoopDetected A loop has been detected.
MaximumFailureResponseCode The largest possible valid failure response code.
MaximumProvisionalResponseCode Maximum valid provisional response code.
MaximumRedirectResponseCode Maximum redirect response code.
MaximumResponseCode The largest possible valid response code.
MaximumSuccessfulResponseCode Maximum successful response code.
MessageTooLarge The message is too large.
MethodNotAllowed The method is not allowed.
MinimumFailureResponseCode Minimum response code indicating failure.
MinimumProvisionalResponseCode Minimum provisional response code.
MinimumRedirectResponseCode Minimum redirect response code.
MinimumResponseCode Minimum valid response code.
MinimumSuccessfulResponseCode Minimum successful response code.
MovedPermanently The user is no longer available.
MultipleChoices Multiple Choices.
None Indicates invalid response code fields.
NotAcceptable Could not find a compatible Accept header.
NotAcceptableHere SDP is not acceptable, is in an invalid format, or is not supported.
NotAcceptableMedia Media is not acceptable.
NotFound The user does not exist at the domain specified.
NotImplemented Feature is not implemented.
ProxyAuthenticationRequired Proxy authentication is required.
ProxyShouldRedirect Proxy should redirect.
Queued Represents the provisional Queued response.
RedirectResponseCode The user has moved temporarily.
RequestPending Request pending.
RequestTerminated The request was terminated by a Bye or Cancel.
RequestTimeout The request could not be fulfilled in a suitable amount of time.
RequestTooLarge The request entity body is too large.
RequestUriTooLong The request URI is too long.
ResourceGone The requested resource is no longer available.
Ringing Represents the provisional Ringing response.
ServerTimeout Server time-out.
ServiceUnavailable Service unavailable.
SessionProgress Represents the provisional SessionInProgress response.
SessionTimerTooSmall The session timer indicated in the message is too small.
Success Successful.
TemporarilyUnavailable The user is unavailable.
TooManyHops Too many hops are detected.
Trying Represents the provisional Trying response.
Unauthorized The request requires user authentication.
UnsupportedMediaType The media type is unsupported.
UnsupportedUriScheme The scheme of the URI in the request URI is unknown.
UseProxy Proxy must be used to access the requested resource.
VersionNotSupported The SIP protocol version is not supported.

See Also