SIP error code

SIP error code

Code Meaning
1xx Informational — request received, continuing to process the request
2xx Success — the action was successfully received, understood, and accepted
3xx Redirection — further action needs to be taken in order to complete the request
4xx Client Error — the request contains bad syntax or cannot be fulfilled at this server
5xx Server Error — the server failed to fulfill an apparently valid request
6xx Global Failure — the request cannot be fulfilled at any server.
Code Meaning
1xx Informational
100 Trying
180 Ringing
181 Call Is Being Forwarded
182 Queued
2xx Success
200 OK
3xx Redirection
300 Multiple Choices
301 Moved Permanently
302 Moved Temporarily
303 See Other
305 Use Proxy
380 Alternative Service
4xx Client Error
400 Bad Request
401 Unauthorized
402 Payment Required
403 Forbidden
404 Not Found
405 Method Not Allowed
406 Not Acceptable
407 Proxy Authentication Required
408 Request Timeout
409 Conflict
410 Gone
411 Length Required
413 Request Entity Too Large
414 Request-URI Too Large
415 Unsupported Media Type
420 Bad Extension
480 Temporarily not available
481 Call Leg/Transaction Does Not Exist
482 Loop Detected
483 Too Many Hops
484 Address Incomplete
485 Ambiguous
486 Busy Here
5xx Server Error
500 Internal Server Error
501 Not Implemented
502 Bad Gateway
503 Service Unavailable
504 Gateway Time-out
505 SIP Version not supported
6xx General Error
600 Busy Everywhere
603 Decline (9)
604 Does not exist anywhere
606 Does not exist anywhere

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