SIP Carrier Error Codes
When using Wireshark to trouble-shoot calling problems in SIP, calls that fail will typically be given a error code to indicate what occurred.The following is a list of generic error codes that can be used for reference.
* Provisional (1xx): Request received and being processed.
* Success (2xx): The action was successfully received, understood, and accepted.
* Redirection (3xx): Further action needs to be taken (typically by sender/Dialer) to complete the request.
* Client Error (4xx): The request contains bad syntax or cannot be fulfilled at the server (Carrier).
* Server Error (5xx): The server (Carrier) failed to fulfill an apparently valid request.
* Global Failure (6xx): The request cannot be fulfilled at any server (Carrier).
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Last Updated
28th of April, 2011
