B-5 Server Failure 5Xx - NEC MG-SIP Configuration Manual

404 Not Found (MG-SIP Support = Yes)
405 Method Not Allowed (MG-SIP Support = Yes)
406 Not Acceptable (MG-SIP Support = Yes)
407 Proxy Authentication Required (MG-SIP Support = Yes)
408 Request Timeout (MG-SIP Support = Yes)
410 Gone (MG-SIP Support = Yes)
413 Request Entity Too Large (MG-SIP Support = No)
414 Request-URI Too Long (MG-SIP Support = No)
415 Unsupported Media Type (MG-SIP Support = Yes)
416 Unsupported URI Scheme (MG-SIP Support = Yes)
420 Bad Extension (MG-SIP Support = Yes)
421 Extension Required (MG-SIP Support = No)
423 Interval Too Brief (MG-SIP Support = No)
480 Temporarily Unavailable (MG-SIP Support = Yes)
481 Call/Transaction Does Not Exist (MG-SIP Support = Yes)
482 Loop Detected (MG-SIP Support = No)
483 Too Many Hops (MG-SIP Support = No)
484 Address Incomplete (MG-SIP Support = Yes)
485 Ambiguous (MG-SIP Support = No)
486 Busy Here (MG-SIP Support = Yes)
487 Request Terminated (MG-SIP Support = Yes)
488 Not Acceptable Here (MG-SIP Support = Yes)
491 Request Pending (MG-SIP Support = Yes)
493 Undecipherable (MG-SIP Support = No)

B-5 Server Failure 5xx

5xx responses are failure responses given when a server itself has erred.
500 Server Internal Error (MG-SIP Support = Yes)
501 Not Implemented (MG-SIP Support = Yes)
502 Bad Gateway (MG-SIP Support = Yes)
503 Service Unavailable (MG-SIP Support = Yes)
504 Server Time-out (MG-SIP Support = No)
505 Version Not Supported (MG-SIP Support = No)
513 Message Too Large (MG-SIP Support = No)
B-6 Global Failures 6xx
6xx responses indicate that a server has definitive information about a particular user, not just the particular instance
indicated in the Request-URI.
600 Busy Everywhere (MG-SIP Support = No)
603 Decline (MG-SIP Support = No)
604 Does Not Exist Anywhere (MG-SIP Support = No)
606 Not Acceptable (MG-SIP Support = No)
MG-SIP Page 75 of 75 5/8/2009