h1. Соответствие кодов завершения SIP/Asterisk/Q.931

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[[Коды завершения Q.931]]

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.

h3. SIP -> Asterisk

|*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|

h3. Asterisk -> SIP

|*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|

h3. Asterisk <-> Q.931

|*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|