1
|
unknown
|
Unknown error.
|
400
|
badRequest
|
The request could not be understood because of malformed syntax.
|
401
|
unauthorized
|
The request requires user authentication.
|
402
|
paymentRequired
|
Reserved for future use.
|
403
|
forbidden
|
The server understood the request but refuses to fulfill it.
|
404
|
notFound
|
The server has information that the user does not exist at the domain specified in the Request-URI.
|
405
|
methodNotallowed
|
The method specified in the Request-Line is understood but not allowed for the address identified by the Request-URI.
|
406
|
notAcceptable
|
The resource identified by the request is only capable of generating response entities with content characteristics that are
not acceptable according to the Accept header field sent in the request.
|
407
|
proxyAuthenticationRequired
|
The client must first authenticate with the proxy.
|
408
|
requestTimeout
|
The server could not produce a response within a suitable amount of time.
|
409
|
conflict
|
The request could not be completed due to a conflict with the current state of the resource.
|
410
|
gone
|
The requested resource is no longer available at the server, and no forwarding address is known.
|
411
|
lengthRequired
|
The server is refusing to process a request because the request entity-body is larger than the server is willing or able to
process.
|
413
|
requestEntityTooLarge
|
The server is refusing to process a request because the request entity-body is larger than the server is willing or able to
process.
|
414
|
requestURITooLarge
|
The server is refusing to service the request because the Request-URI is longer than the server is willing to interpret.
|
415
|
unsupportedMediaType
|
The server is refusing to service the request because the message body of the request is in a format not supported by the
server for the requested method.
|
420
|
badExtension
|
The server did not understand the protocol extension specified in a Proxy-Require or Require header field.
|
480
|
temporarilyNotAvailable
|
The callee’s end system was contacted successfully, but the callee is currently unavailable.
|
481
|
callLegDoesNotExist
|
The UAS received a request that does not match any existing dialog or transaction.
|
482
|
loopDetected
|
The server has detected a loop.
|
483
|
tooManyHops
|
The server received a request that contains a Max-Forwards header field with the value zero.
|
484
|
addressIncomplete
|
The server received a request with a Request-URI that was incomplete.
|
485
|
ambiguous
|
The Request-URI was ambiguous.
|
486
|
busy
|
The callee’s end system was contacted successfully, but the callee is currently not willing or able to take additional calls
at this end system.
|
500
|
internalServerError
|
The server encountered an unexpected condition that prevented it from fulfilling the request.
|
501
|
notImplemented
|
The server does not support the functionality required to fulfill the request.
|
502
|
badGateway
|
The server, while acting as a gateway or proxy, received an invalid response from the downstream server it accessed in attempting
to fulfill the request.
|
503
|
serviceUnavailable
|
The server is temporarily unable to process the request because of a temporary overloading or maintenance of the server.
|
504
|
serverTimeout
|
The server did not receive a timely response from an external server it accessed in attempting to process the request.
|
505
|
versionNotSupported
|
The server does not support or refuses to support the SIP protocol version that was used in the request.
|
600
|
busyEverywhere
|
The callee’s end system was contacted successfully, but the callee is busy or does not want to take the call at this time.
|
603
|
decline
|
The callee’s machine was contacted successfully, but the user does not want to or cannot participate.
|
604
|
doesNotExistAnywhere
|
The server has information that the user indicated in the Request-URI does not exist anywhere.
|
606
|
notAcceptable
|
The user’s agent was contacted successfully, but some aspects of the session description (such as the requested media, bandwidth,
or addressing style) were not acceptable.
|