SIP Response Messages
•409 Conflict
•410 Gone
•411 Length Required
•413 Request Entity Too Large
•414
•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 Responses 5xx SIP response message are server error responses:
•500 Internal Server Error
•501 Not Implemented
•502 Bad Gateway
•503 Service Unavailable
•504 Gateway
•505 SIP Version not supported
6xx Responses 6xx SIP response message are global failure responses:
•600 Busy Everywhere
•603 Decline
•604 Does not exist anywhere
•606 Not Acceptable
