При обработке запроса на завершение вызова, Asterisk преобразует код завершения от канального драйвера (например, SIP) во внутренний формат AST_CAUSE.
Если вследствие обработки завершения вызова от одного из каналов, требуется завершить вызов на соединенном канале, Asterisk преобразует внутренний формат AST_CAUSE в формат, соответствующий каналу.
Например, при получении запроса на завершение вызова SIP 410 Gone, Asterisk преобразует его в AST_CAUSE_NUMBER_CHANGED и отдаст в виде 22 Номер изменен на канал H.323.
| SIP |
Asterisk |
| 401 |
AST_CAUSE_CALL_REJECTED |
| 403 |
AST_CAUSE_CALL_REJECTED |
| 404 |
AST_CAUSE_UNALLOCATED |
| 407 |
AST_CAUSE_CALL_REJECTED |
| 408 |
AST_CAUSE_NO_USER_RESPONSE |
| 409 |
AST_CAUSE_NORMAL_TEMPORARY_FAILURE |
| 410 |
AST_CAUSE_NUMBER_CHANGED |
| 415 |
AST_CAUSE_BEARERCAPABILITY_NOTAVAIL |
| 420 |
AST_CAUSE_NO_ROUTE_DESTINATION |
| 428 |
AST_CAUSE_BEARERCAPABILITY_NOTAVAIL |
| 480 |
AST_CAUSE_SUBSCRIBER_ABSENT |
| 484 |
AST_CAUSE_INVALID_NUMBER_FORMAT |
| 485 |
AST_CAUSE_UNALLOCATED |
| 486 |
AST_CAUSE_USER_BUSY |
| 487 |
AST_CAUSE_NORMAL_CLEARING |
| 488 |
AST_CAUSE_BEARERCAPABILITY_NOTAVAIL |
| 500 |
AST_CAUSE_NETWORK_OUT_OF_ORDER |
| 501 |
AST_CAUSE_FACILITY_REJECTED |
| 502 |
AST_CAUSE_DESTINATION_OUT_OF_ORDER |
| 504 |
AST_CAUSE_RECOVERY_ON_TIMER_EXPIRE |
| 505 |
AST_CAUSE_INTERWORKING |
| 600 |
AST_CAUSE_USER_BUSY |
| 603 |
AST_CAUSE_CALL_REJECTED |
| 604 |
AST_CAUSE_UNALLOCATED |
| 606 |
AST_CAUSE_BEARERCAPABILITY_NOTAVAIL |
| [400, 500) |
AST_CAUSE_INTERWORKING |
| [500, 600) |
AST_CAUSE_NORMAL_CIRCUIT_CONGESTION |
| [600, 700) |
AST_CAUSE_INTERWORKING |
| другое |
AST_CAUSE_NORMAL_CLEARING |
| Asterisk |
SIP |
| AST_CAUSE_UNALLOCATED |
503 Service Unavailable |
| AST_CAUSE_NO_ROUTE_DESTINATION |
503 Service Unavailable |
| AST_CAUSE_NO_ROUTE_TRANSIT_NET |
503 Service Unavailable |
| AST_CAUSE_CONGESTION |
503 Service Unavailable |
| AST_CAUSE_SWITCH_CONGESTION |
503 Service Unavailable |
| AST_CAUSE_NO_USER_RESPONSE |
408 Request Timeout |
| AST_CAUSE_NO_ANSWER |
480 Temporarily unavailable |
| AST_CAUSE_UNREGISTERED |
480 Temporarily unavailable |
| AST_CAUSE_CALL_REJECTED |
403 Forbidden |
| AST_CAUSE_NUMBER_CHANGED |
410 Gone |
| AST_CAUSE_NORMAL_UNSPECIFIED |
480 Temporarily unavailable |
| AST_CAUSE_INVALID_NUMBER_FORMAT |
503 Service Unavailable |
| AST_CAUSE_USER_BUSY |
486 Busy here |
| AST_CAUSE_NETWORK_OUT_OF_ORDER |
500 Server internal failure |
| AST_CAUSE_FACILITY_REJECTED |
501 Not Implemented |
| AST_CAUSE_CHAN_NOT_IMPLEMENTED |
503 Service Unavailable |
| AST_CAUSE_DESTINATION_OUT_OF_ORDER |
502 Bad Gateway |
| AST_CAUSE_BEARERCAPABILITY_NOTAVAIL |
503 Service Unavailable |
| AST_CAUSE_INTERWORKING |
500 Network error |
| AST_CAUSE_NORMAL_CLEARING |
487 Request Terminated |
| другое |
503 Service Unavailable |
| Asterisk |
Q.931 |
| AST_CAUSE_UNALLOCATED |
1 |
| AST_CAUSE_NO_ROUTE_TRANSIT_NET |
2 |
| AST_CAUSE_NO_ROUTE_DESTINATION |
3 |
| AST_CAUSE_MISDIALLED_TRUNK_PREFIX |
5 |
| AST_CAUSE_CHANNEL_UNACCEPTABLE |
6 |
| AST_CAUSE_CALL_AWARDED_DELIVERED |
7 |
| AST_CAUSE_PRE_EMPTED |
8 |
| AST_CAUSE_NUMBER_PORTED_NOT_HERE |
14 |
| AST_CAUSE_NORMAL_CLEARING |
16 |
| AST_CAUSE_USER_BUSY |
17 |
| AST_CAUSE_NO_USER_RESPONSE |
18 |
| AST_CAUSE_NO_ANSWER |
19 |
| AST_CAUSE_CALL_REJECTED |
21 |
| AST_CAUSE_NUMBER_CHANGED |
22 |
| AST_CAUSE_REDIRECTED_TO_NEW_DESTINATION |
23 |
| AST_CAUSE_ANSWERED_ELSEWHERE |
26 |
| AST_CAUSE_DESTINATION_OUT_OF_ORDER |
27 |
| AST_CAUSE_INVALID_NUMBER_FORMAT |
28 |
| AST_CAUSE_FACILITY_REJECTED |
29 |
| AST_CAUSE_RESPONSE_TO_STATUS_ENQUIRY |
30 |
| AST_CAUSE_NORMAL_UNSPECIFIED |
31 |
| AST_CAUSE_NORMAL_CIRCUIT_CONGESTION |
34 |
| AST_CAUSE_NETWORK_OUT_OF_ORDER |
38 |
| AST_CAUSE_NORMAL_TEMPORARY_FAILURE |
41 |
| AST_CAUSE_SWITCH_CONGESTION |
42 |
| AST_CAUSE_ACCESS_INFO_DISCARDED |
43 |
| AST_CAUSE_REQUESTED_CHAN_UNAVAIL |
44 |
| AST_CAUSE_FACILITY_NOT_SUBSCRIBED |
50 |
| AST_CAUSE_OUTGOING_CALL_BARRED |
52 |
| AST_CAUSE_INCOMING_CALL_BARRED |
54 |
| AST_CAUSE_BEARERCAPABILITY_NOTAUTH |
57 |
| AST_CAUSE_BEARERCAPABILITY_NOTAVAIL |
58 |
| AST_CAUSE_BEARERCAPABILITY_NOTIMPL |
65 |
| AST_CAUSE_CHAN_NOT_IMPLEMENTED |
66 |
| AST_CAUSE_FACILITY_NOT_IMPLEMENTED |
69 |
| AST_CAUSE_INVALID_CALL_REFERENCE |
81 |
| AST_CAUSE_INCOMPATIBLE_DESTINATION |
88 |
| AST_CAUSE_INVALID_MSG_UNSPECIFIED |
95 |
| AST_CAUSE_MANDATORY_IE_MISSING |
96 |
| AST_CAUSE_MESSAGE_TYPE_NONEXIST |
97 |
| AST_CAUSE_WRONG_MESSAGE |
98 |
| AST_CAUSE_IE_NONEXIST |
99 |
| AST_CAUSE_INVALID_IE_CONTENTS |
100 |
| AST_CAUSE_WRONG_CALL_STATE |
101 |
| AST_CAUSE_RECOVERY_ON_TIMER_EXPIRE |
102 |
| AST_CAUSE_MANDATORY_IE_LENGTH_ERROR |
103 |
| AST_CAUSE_PROTOCOL_ERROR |
111 |
| AST_CAUSE_INTERWORKING |
127 |