Deskmaster
Deskmaster
65
Deskmaster
Q.931 Spec.
Cause description
Cause
Cause
(HEX)
(DEC)
51
81
Invalid call reference value
52
82
Identified channel does not exist
53
83
A suspended call exists, but this call identity does not
54
84
Call identity in use
55
85
No call suspended
56
86
Call having the requested call identity has been cleared
58
88
Incompatible destination
5B
91
Invalid transit network selection
5F
95
Invalid message, unspecified
60
96
Mandatory information element is missing
61
97
Message type non-existent or not implemented
62
98
Message not compatible with call state or message type non-existent
or not implemented
63
99
Information element non-existent or not implemented
64
100
Invalid information element contents
65
101
Message not compatible with call state
66
102
Recovery on timer expiry
6F
111
Protocol error, unspecified
7F
127
Interworking, unspecified
64
ERROR MESSAGES/CAUSES
Deskmaster
Q.931 Spec.
Cause description
Cause
Cause
(HEX)
(DEC)
1
1
Unallocated (unassigned) number
2
2
No route to specific transit network
3
3
No route to destination
6
6
Channel unacceptable
7
7
Call awarded and being delivered in an established channel
10
16
Normal call clearing
11
17
User busy
12
18
No user responding
13
19
No answer from user (user alerted)
15
21
Call rejected
16
22
Number changed
1A
26
Non-selected user clearing
1B
27
Destination out of order
1C
28
Invalid number format
1D
29
Facility rejected
1E
30
Response to STATUS ENQUIRY
1F
31
Normal, unspecified
22
34
No circuit/channel available
26
38
Network out of order
29
41
Temporary failure
2A
42
Switching equipment congestion
2B
43
Access information discarded
2C
44
Requested circuit/channel not available
2F
47
Resources unavailable, unspecified
31
49
Quality of service unavailable
32
50
Requested facility not subscribed
39
57
Bearer capability not authorized
3A
58
Bearer capability not presently available
3F
63
Service or option not available, unspecified
41
65
Bearer capability not implemented
42
66
Channel type not implemented
45
69
Requested facility not implemented
46
70
Only restricted digital information bearer capability is available
4F
79
Service or option not implemented, unspecified