SIP EVENTS

SIP event	Decimal Cause number (DSS1)	Hex.Cause number (DSS1)	Cause
400 Bad request	127	7f	Interworking, unspecified
401 Unauthorized	57	39	Bearer capability not authorized
402 Payment required	21	15	Call rejected
403 Forbidden	57	39	Bearer capability not authorized
404 Not found	1	01	Unallocated (unassigned) number
405 Method not allowed	127	7f	Interworking, unspecified
406 Not acceptable	127	7f	Interworking, unspecified
407 Proxy authent. required	21	15	Call rejected
408 Request timeout	102	66	Recover on Expires timeout
409 Conflict	41	29	Temporary failure
410 Gone	1	01	Unallocated (unassigned) number
411 Length required	127	7f	Interworking, unspecified
413 Request entity too long	127	7f	Interworking, unspecified
414 Request URI (URL) too long	127	7f	Interworking, unspecified
415 Unsupported media type	79	4f	Service or option not available
420 Bad extension	127	7f	Interworking, unspecified
480 Temporarily unavailable	18	12	No user response
481 Call leg does not exist	127	7f	Interworking, unspecified
482 Loop detected	127	7f	Interworking, unspecified
483 Too many hops	127	7f	Interworking, unspecified
484 Address incomplete	28	1c	Address incomplete (invalid number format)
485 Address ambiguous	1	01	Unallocated (unassigned) number
486 Busy here	17	11	User busy
487 Request cancelled	127	7f	Interworking, unspecified
488 Not acceptable here	127	7f	Interworking, unspecified
500 Internal server error	41	29	Temporary failure
501 Not implemented	79	4f	Service or option not implemented
502 Bad gateway	38	26	Network out of order
503 Service unavailable	63	3f	Service or option unavailable
504 Gateway timeout	102	66	Recover on Expires timeout
505 Version not implemented	127	7f	Interworking, unspecified
603 Decline	21	15	Call rejected
604 Does not exist anywhere	1	01	Unallocated (unassigned) number
606 Not acceptable	58	3a	Bearer capability not presently available