Cause code mappings (Q931 order)
| Q931 Cause Code |
DASS2 Cause Codes |
Q931 Description |
SIP Event |
| 1 |
0 |
Unallocated number |
404 Not found |
| 2 |
3 |
No route to specified transit network |
404 Not found |
| 3 |
3 |
No route to destination |
404 Not found |
| 5 |
11 |
Channel unacceptable |
502 Bad gateway |
| 6 |
11 |
Channel unacceptable |
502 Bad gateway |
| 7 |
50 |
Call delivered in busy channel |
502 Bad gateway |
| 17 |
8 |
User busy |
486 Bad Gateway |
| 18 |
31 |
No user responding |
502 Bad Gateway |
| 19 |
31 |
No answer user alerted |
502 Bad Gateway |
| 21 |
11 |
Call rejected |
403 Forbidden |
| 22 |
5 |
Number changed |
502 Bad gateway |
| 26 |
45 |
Non selected user clearing |
403 Forbidden |
| 27 |
46 |
Destination out of order |
502 Bad gateway |
| 28 |
1 |
Invalid format address incomplete |
502 Bad gateway |
| 29 |
21 |
Facility rejected |
502 Bad gateway |
| 30 |
20 |
Response to status enquiry |
502 Bad gateway |
| 31 |
2 |
Normal clearing |
502 Bad gateway |
| 38 |
9 |
Network out of order |
502 Bad gateway |
| 41 |
9 |
Temporary failure |
502 Bad gateway |
| 42 |
7 |
Switching equiment congestion |
503 Service unavailable |
| 44 |
7 |
Request circuit channel not available |
502 Bad gateway |
| 47 |
47 |
Resource unavailable |
502 Bad gateway |
| 49 |
7 |
Quality of service not available |
502 Bad gateway |
| 58 |
7 |
Bearer capability not available |
502 Bad gateway |
| 50 |
6 |
Facility not subscribed |
502 Bad gateway |
| 57 |
6 |
Bearer capability not subscribed |
502 Bad gateway |
| 63 |
6 |
Service / option not available |
502 Bad gateway |
| 65 |
6 |
Bearer capability not implemented |
502 Bad gateway |
| 66 |
6 |
Channel type not implemented |
502 Bad gateway |
| 69 |
6 |
Facility not implemented |
502 Bad gateway |
| 70 |
6 |
Only RDI bearer capability is available |
502 Bad gateway |
| 79 |
6 |
Service / option not implemented |
502 Bad gateway |
| 81 |
18 |
Invalid call reference value |
502 Bad gateway |
| 82 |
51 |
Identified channel does not exist |
502 Bad gateway |
| 83 |
26 |
Bad call identity for suspended call |
502 Bad gateway |
| 84 |
51 |
Call identity in use |
502 Bad gateway |
| 85 |
51 |
No suspended call |
502 Bad gateway |
| 86 |
51 |
Call with call identity does not exist |
502 Bad gateway |
| 88 |
19 |
Incompatible destination |
502 Bad gateway |
| 91 |
2 |
Invalid transit network specified |
502 Bad gateway |
| 95 |
51 |
Invalid message unspecified |
502 Bad gateway |
| 96 |
26 |
Mandatory IE missing |
502 Bad gateway |
| 97 |
26 |
Message type not implemented |
502 Bad gateway |
| 98 |
51 |
Message not compatible with call state |
502 Bad gateway |
| 99 |
26 |
IE not implemeneted |
502 Bad gateway |
| 100 |
26 |
Invalid IE content |
502 Bad gateway |
| 101 |
51 |
Message not compatible with call state |
502 Bad gateway |
| 102 |
46 |
Recovery on timer expiry |
502 Bad gateway |
| 111 |
51 |
Protocol error |
502 Bad gateway |
| 127 |
21 |
Internetworking unspecified |
502 Bad gateway |
