ISUP (ISDN)
Cause Value |
Meaning |
SIP Status
Code |
Meaning |
|
1 |
Unallocated number |
404 |
Not Found |
|
2 |
No route to specified transit network |
404 |
Not Found |
|
3 |
No route to destination |
404 |
Not Found |
|
26 |
Non-selected user clearing |
404 |
Not Found |
|
16 |
Normal call clearing (timeout waiting for the called party to answer) |
603 |
Discard |
|
16 |
Normal call clearing |
500 |
Discard |
|
17 |
User busy |
486 |
Busy Here |
|
132 |
Network busy (internal definition, ISDN only) |
486 |
Busy Here |
|
21 |
Call rejected |
486 |
Busy Here |
|
18 |
No user responding |
408 |
Request Timeout |
|
19 |
No answer from user (user has been alerted) |
480 |
Temporarily Unavailable |
|
20 |
Subscriber absent |
480 |
Temporarily Unavailable |
|
31 |
Normal, unspecified |
480 |
Temporarily Unavailable |
|
136 |
Connection failure after off-hook (internal definition, ISDN only) |
480 |
Temporarily Unavailable |
|
137 |
Off-hook timeout (internal definition, ISDN only) |
480 |
Temporarily Unavailable |
|
55 |
Incoming calls barred within CUG |
403 |
Forbidden |
|
57 |
Bearer capability not authorized |
403 |
Forbidden |
|
87 |
User is not a CUG member |
403 |
Forbidden |
|
22 |
Number changed |
410 |
Gone |
|
27 |
Destination out of order |
502 |
Bad Gateway |
|
28 |
Invalid number format |
484 |
Address Incomplete |
|
29 |
Facility rejected |
501 |
Not Implemented |
|
79 |
Service or option not implemented, unspecified |
501 |
Not Implemented |
|
34 |
No circuit / channel 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, unspecified |
503 |
Service Unavailable |
|
58 |
Bearer capability not presently available |
503 |
Service Unavailable |
|
88 |
Incompatible destination |
503 |
Service Unavailable |
|
133 |
Circuit reset (internal definition, ISDN only) |
503 |
Service Unavailable |
|
134 |
Temporary failure (internal definition, ISDN only) |
503 |
Service Unavailable |
|
135 |
Data link failure (internal definition, ISDN only) |
503 |
Service Unavailable |
|
65 |
Bearer capability not implemented |
488 |
Not Acceptable Here |
|
70 |
Only restricted digital information bearer capability is available |
488 |
Not Acceptable Here |
|
102 |
Recovery on timer expiry |
504 |
Server Time-out |
|
128 |
T303 timeout (internal definition, ISDN only) |
504 |
Server Time-out |
|
129 |
T304 timeout (internal definition, ISDN only) |
504 |
Server Time-out |
|
130 |
T310 timeout (internal definition, ISDN only) |
504 |
Server Time-out |
|
111 |
Protocol error, unspecified |
500 |
Internal Server Error |
|
127 |
Interworking, unspecified |
500 |
Internal Server Error |
|
Other |
Other |
408 |
Request Timeout |
