| 1 unallocated number | 404 Not Found |
| 2 no route to network | 404 Not Found |
| 3 no route to destination | 404 Not Found |
| 17 user busy | 486 Busy here |
| 18 no user responding | 408 Request Timeout |
| 19 no answer from the user | 480 Temporarily unavailable |
| 20 subscriber absent | 480 Temporarily unavailable |
| 21-nonusr - call rejected | 603 Decline (cause location is user) |
| 21-usr - call rejected | 403 Forbidden (cause location is non user) |
| 22-nondiag - number changed (w/o diagnostic) | 410 Gone |
| 23 redirection to new destination | 410 Gone |
| 26 non-selected user clearing | 404 Not Found |
| 27 destination out of order | 502 Bad Gateway |
| 28 address incomplete | 484 Address incomplete |
| 29 facility rejected | 501 Not implemented |
| 31 normal unspecified | 480 Temporarily unavailable |
| 34 no circuit available | 503 Service unavailable |
| 38 network out of order | 503 Service unavailable |
| 41 temporary failure | 503 Service unavailable |
| 42 switching equipment congestion | 503 Service unavailable |
| 47 resource unavailable | 503 Service unavailable |
| 55 incoming calls barred within CUG | 403 Forbidden |
| 57 bearer capability not authorized | 403 Forbidden |
| 58 bearer capability not presently available | 503 Service unavailable |
| 65 bearer capability not implemented | 488 Not Acceptable Here |
| 70 only restricted digital available | 488 Not Acceptable Here |
| 79 service or option not implemented | 501 Not implemented |
| 87 user not member of CUG | 403 Forbidden |
| 88 incompatible destination | 503 Service unavailable |
| 102 recovery of timer expiry | 504 Gateway timeout |
| 111 protocol error | 500 Server internal error |
| 127 inter-working unspecified | 500 Server internal error |
| Default (any other) | 500 Server internal error |
34.239.173.144
Total Users : 116788
Total views : 645724
