оригинал: http://www.voip-info.org/wiki/index.php?page=Asterisk+variable+hangupcause

1. define AST_CAUSE_NOTDEFINED 0
2. define AST_CAUSE_NORMAL 1
3. define AST_CAUSE_BUSY 2
4. define AST_CAUSE_FAILURE 3
5. define AST_CAUSE_CONGESTION 4
6. define AST_CAUSE_UNALLOCATED 5

/* Causes for disconnection (from Q.931) */

1. define AST_CAUSE_UNALLOCATED 1
2. define AST_CAUSE_NO_ROUTE_TRANSIT_NET 2
3. define AST_CAUSE_NO_ROUTE_DESTINATION 3
4. define AST_CAUSE_CHANNEL_UNACCEPTABLE 6
5. define AST_CAUSE_CALL_AWARDED_DELIVERED 7
6. define AST_CAUSE_NORMAL_CLEARING 16
7. define AST_CAUSE_USER_BUSY 17
8. define AST_CAUSE_NO_USER_RESPONSE 18
9. define AST_CAUSE_NO_ANSWER 19
10. define AST_CAUSE_CALL_REJECTED 21
11. define AST_CAUSE_NUMBER_CHANGED 22
12. define AST_CAUSE_DESTINATION_OUT_OF_ORDER 27
13. define AST_CAUSE_INVALID_NUMBER_FORMAT 28
14. define AST_CAUSE_FACILITY_REJECTED 29
15. define AST_CAUSE_RESPONSE_TO_STATUS_ENQUIRY 30
16. define AST_CAUSE_NORMAL_UNSPECIFIED 31
17. define AST_CAUSE_NORMAL_CIRCUIT_CONGESTION 34
18. define AST_CAUSE_NETWORK_OUT_OF_ORDER 38
19. define AST_CAUSE_NORMAL_TEMPORARY_FAILURE 41
20. define AST_CAUSE_SWITCH_CONGESTION 42
21. define AST_CAUSE_ACCESS_INFO_DISCARDED 43
22. define AST_CAUSE_REQUESTED_CHAN_UNAVAIL 44
23. define AST_CAUSE_PRE_EMPTED 45
24. define AST_CAUSE_FACILITY_NOT_SUBSCRIBED 50
25. define AST_CAUSE_OUTGOING_CALL_BARRED 52
26. define AST_CAUSE_INCOMING_CALL_BARRED 54
27. define AST_CAUSE_BEARERCAPABILITY_NOTAUTH 57
28. define AST_CAUSE_BEARERCAPABILITY_NOTAVAIL 58
29. define AST_CAUSE_BEARERCAPABILITY_NOTIMPL 65
30. define AST_CAUSE_CHAN_NOT_IMPLEMENTED 66
31. define AST_CAUSE_FACILITY_NOT_IMPLEMENTED 69
32. define AST_CAUSE_INVALID_CALL_REFERENCE 81
33. define AST_CAUSE_INCOMPATIBLE_DESTINATION 88
34. define AST_CAUSE_INVALID_MSG_UNSPECIFIED 95
35. define AST_CAUSE_MANDATORY_IE_MISSING 96
36. define AST_CAUSE_MESSAGE_TYPE_NONEXIST 97
37. define AST_CAUSE_WRONG_MESSAGE 98
38. define AST_CAUSE_IE_NONEXIST 99
39. define AST_CAUSE_INVALID_IE_CONTENTS 100
40. define AST_CAUSE_WRONG_CALL_STATE 101
41. define AST_CAUSE_RECOVERY_ON_TIMER_EXPIRE 102
42. define AST_CAUSE_MANDATORY_IE_LENGTH_ERROR 103
43. define AST_CAUSE_PROTOCOL_ERROR 111
44. define AST_CAUSE_INTERWORKING 127

/* Special Asterisk aliases */

1. define AST_CAUSE_BUSY AST_CAUSE_USER_BUSY
2. define AST_CAUSE_FAILURE AST_CAUSE_NETWORK_OUT_OF_ORDER
3. define AST_CAUSE_NORMAL AST_CAUSE_NORMAL_CLEARING
4. define AST_CAUSE_NOANSWER AST_CAUSE_NO_ANSWER
5. define AST_CAUSE_CONGESTION AST_CAUSE_NORMAL_CIRCUIT_CONGESTION
6. define AST_CAUSE_NOTDEFINED 0

[7-digit-PRI-Machine-2] ; The machine connected to PRI 2 (on its g1)
exten => _9NXXXXXX,1,Dial(Zap/g1/${EXTEN:1})
exten => _9NXXXXXX,2,gotoif,$[${HANGUPCAUSE} = 2]?99999|1
exten => 99999,1,Busy

[default]
exten => 91NXXNXXXXXX,1,Dial(${PSTN}/${EXTEN:1}
exten => 91NXXNXXXXXX,2,Macro(dial-result,${NUFONE}/${EXTEN:1})

[macro-dial-result]
;
; Handle Disconnect Cause Codes
;
exten => s,1,NoOp(HANGUPCAUSE is ${HANGUPCAUSE})
exten => s,2,AbsoluteTimeout(120)
exten => s,3,Goto(${HANGUPCAUSE},1)

exten => 0,1,NoOp(AST_CAUSE_NOTDEFINED)
exten => 0,2,GoToIf($"${SAVED_EXTEN}" != ""?0,4)
exten => 0,3,SetVar(SAVED_EXTEN=${MACRO_EXTEN})
exten => 0,4,GoToIf($"${SAVED_ARG1}" != ""?0,6)
exten => 0,5,SetVar(SAVED_ARG1=${ARG1})
exten => 0,6,GoToIf($"${ARG1}" = ""?0,11)
exten => 0,7,System(/bin/echo AST_CAUSE_NOTDEFINED received when dialing ${SAVED_EXTEN}. Trying again using ${SAVED_ARG1}. | /usr/bin/mutt -s "COLISEUM PBX ERROR" pbxadmin-pager@)
exten => 0,8,SetVar(ARG1=)
exten => 0,9,Dial(${SAVED_ARG1})
exten => 0,10,Macro(dial-result)
exten => 0,11,System(/bin/echo AST_CAUSE_NOTDEFINED received when dialing ${SAVED_ARG1}. Giving up. | /usr/bin/mutt -s "COLISEUM PBX ERROR" pbxadmin-pager)
exten => 0,12,Zapateller(answer)
exten => 0,13,Playback(an-error-has-occured)
exten => 0,14,Playback(pls-try-call-later)
exten => 0,15,Wait(3)
exten => 0,16,Zapateller(answer)
exten => 0,17,Playback(an-error-has-occured)
exten => 0,18,Playback(pls-try-call-later)
exten => 0,19,Wait(3)
exten => 0,20,Congestion

[handling of other cause codes removed for brevity]