Reason (Reason Structure)
These ENUMs are used in the Reason Structure (see Reason Structure).
Enum Reason (Reason Structure)
| 
                                                             Reason  | 
                                                        
                                                             Value  | 
                                                    
|---|---|
| 
                                                             INVITE  | 
                                                        
                                                             5  | 
                                                    
| 
                                                             REINVITE  | 
                                                        
                                                             6  | 
                                                    
| 
                                                             BYE  | 
                                                        
                                                             7  | 
                                                    
| 
                                                             OPTIONS  | 
                                                        
                                                             8  | 
                                                    
| 
                                                             ACK  | 
                                                        
                                                             9  | 
                                                    
| 
                                                             CANCEL  | 
                                                        
                                                             10  | 
                                                    
| 
                                                             REGISTER  | 
                                                        
                                                             11  | 
                                                    
| 
                                                             INFO  | 
                                                        
                                                             12  | 
                                                    
| 
                                                             MESSAGE  | 
                                                        
                                                             13  | 
                                                    
| 
                                                             NOTIFY  | 
                                                        
                                                             14  | 
                                                    
| 
                                                             REFER  | 
                                                        
                                                             15  | 
                                                    
| 
                                                             SUBSCRIBE  | 
                                                        
                                                             16  | 
                                                    
| 
                                                             PRACK  | 
                                                        
                                                             17  | 
                                                    
| 
                                                             UPDATE  | 
                                                        
                                                             18  | 
                                                    
| 
                                                             PUBLISH  | 
                                                        
                                                             19  | 
                                                    
| 
                                                             LAST_REQUEST  | 
                                                        
                                                             20  | 
                                                    
| 
                                                             TRYING_100  | 
                                                        
                                                             100  | 
                                                    
| 
                                                             RINGING_180  | 
                                                        
                                                             180  | 
                                                    
| 
                                                             CALL_FORWARD_181  | 
                                                        
                                                             181  | 
                                                    
| 
                                                             QUEUED_182  | 
                                                        
                                                             182  | 
                                                    
| 
                                                             SESSION_PROGRESS_183  | 
                                                        
                                                             183  | 
                                                    
| 
                                                             OK_200  | 
                                                        
                                                             200  | 
                                                    
| 
                                                             ACCEPTED_202  | 
                                                        
                                                             202  | 
                                                    
| 
                                                             MULTIPLE_CHOICE_300  | 
                                                        
                                                             300  | 
                                                    
| 
                                                             MOVED_PERMANENTLY_301  | 
                                                        
                                                             301  | 
                                                    
| 
                                                             MOVED_TEMPORARILY_302  | 
                                                        
                                                             302  | 
                                                    
| 
                                                             SEE_OTHER_303  | 
                                                        
                                                             303  | 
                                                    
| 
                                                             USE_PROXY_305  | 
                                                        
                                                             305  | 
                                                    
| 
                                                             ALTERNATIVE_SERVICE_380  | 
                                                        
                                                             380  | 
                                                    
| 
                                                             BAD_REQUEST_400  | 
                                                        
                                                             400  | 
                                                    
| 
                                                             UNAUTHORIZED_401  | 
                                                        
                                                             401  | 
                                                    
| 
                                                             PAYMENT_REQUIRED_402  | 
                                                        
                                                             402  | 
                                                    
| 
                                                             FORBIDDEN_403  | 
                                                        
                                                             403  | 
                                                    
| 
                                                             NOT_FOUND_404  | 
                                                        
                                                             404  | 
                                                    
| 
                                                             METHOD_NOT_ALLOWED_405  | 
                                                        
                                                             405  | 
                                                    
| 
                                                             NOT_ACCEPTABLE_406  | 
                                                        
                                                             406  | 
                                                    
| 
                                                             AUTHENTICATION_REQUIRED_407  | 
                                                        
                                                             407  | 
                                                    
| 
                                                             REQUEST_TIMEOUT_408  | 
                                                        
                                                             408  | 
                                                    
| 
                                                             CONFLICT_409  | 
                                                        
                                                             409  | 
                                                    
| 
                                                             GONE_410  | 
                                                        
                                                             410  | 
                                                    
| 
                                                             LENGTH_REQUIRED_411  | 
                                                        
                                                             411  | 
                                                    
| 
                                                             CONDITIONAL_REQUEST_FAILED_412  | 
                                                        
                                                             412  | 
                                                    
| 
                                                             REQUEST_TOO_LARGE_413  | 
                                                        
                                                             413  | 
                                                    
| 
                                                             REQUEST_URI_TOO_LONG_414  | 
                                                        
                                                             414  | 
                                                    
| 
                                                             UNSUPPORTED_MEDIA_415  | 
                                                        
                                                             415  | 
                                                    
| 
                                                             UNSUPPORTED_URI_SCHEME_416  | 
                                                        
                                                             416  | 
                                                    
| 
                                                             UNKNOWN_RESOURCE_PRIORITY_417  | 
                                                        
                                                             417  | 
                                                    
| 
                                                             BAD_EXTENSION_420  | 
                                                        
                                                             420  | 
                                                    
| 
                                                             EXTENSION_REQUIRED_421  | 
                                                        
                                                             421  | 
                                                    
| 
                                                             SESSION_INTERVAL_TOO_SMALL_422  | 
                                                        
                                                             422  | 
                                                    
| 
                                                             SESSION_INTERVAL_TOO_SMALL_423  | 
                                                        
                                                             423  | 
                                                    
| 
                                                             ANONYMITY_DISALLOWED_433  | 
                                                        
                                                             433  | 
                                                    
| 
                                                             UNAVAILABLE_480  | 
                                                        
                                                             480  | 
                                                    
| 
                                                             TRANSACTION_NOT_EXIST_481  | 
                                                        
                                                             481  | 
                                                    
| 
                                                             LOOP_DETECTED_482  | 
                                                        
                                                             482  | 
                                                    
| 
                                                             TOO_MANY_HOPS_483  | 
                                                        
                                                             483  | 
                                                    
| 
                                                             ADDRESS_INCOMPLETE_484  | 
                                                        
                                                             484  | 
                                                    
| 
                                                             AMBIGUOUS_485  | 
                                                        
                                                             485  | 
                                                    
| 
                                                             BUSY_486  | 
                                                        
                                                             486  | 
                                                    
| 
                                                             REQUEST_TERMINATED_487  | 
                                                        
                                                             
  | 
                                                    
| 
                                                             NOT_ACCEPTABLE_HERE_488  | 
                                                        
                                                             488  | 
                                                    
| 
                                                             BAD_EVENT_489  | 
                                                        
                                                             489  | 
                                                    
| 
                                                             REQUEST_PENDING_491  | 
                                                        
                                                             491  | 
                                                    
| 
                                                             UNDECIPHERABLE_493  | 
                                                        
                                                             493  | 
                                                    
| 
                                                             SECURITY_AGREEMENT_NEEDED_494  | 
                                                        
                                                             494  | 
                                                    
| 
                                                             SERVER_INTERNAL_ERROR_500  | 
                                                        
                                                             500  | 
                                                    
| 
                                                             NOT_IMPLEMENTED_501  | 
                                                        
                                                             501  | 
                                                    
| 
                                                             BAD_GATEWAY_502  | 
                                                        
                                                             502  | 
                                                    
| 
                                                             SERVICE_UNAVAILABLE_503  | 
                                                        
                                                             503  | 
                                                    
| 
                                                             SERVER_TIME_OUT_504  | 
                                                        
                                                             504  | 
                                                    
| 
                                                             VERSION_NOT_SUPPORTED_505  | 
                                                        
                                                             505  | 
                                                    
| 
                                                             MESSAGE_TOO_LARGE_513  | 
                                                        
                                                             513  | 
                                                    
| 
                                                             PRECONDITION_FAILURE_580  | 
                                                        
                                                             580  | 
                                                    
| 
                                                             BUSY_EVERYWHERE_600  | 
                                                        
                                                             600  | 
                                                    
| 
                                                             DECLINE_603  | 
                                                        
                                                             603  | 
                                                    
| 
                                                             DOES_NOT_EXIST_ANYWHERE_604  | 
                                                        
                                                             604  | 
                                                    
| 
                                                             NOT_ACCEPTABLE_606  | 
                                                        
                                                             606  |