Cabletron Systems CSX100 series User Manual - Isdn Q.931 Cause Values
Troubleshooting
109
ISDN Q.931 Cause Values
ISDN link level error messages include the Q.931 cause value. The cause
value displayed is the cause number exactly or the number +128. The
following table is a reference list of the Q.931 cause values.
Cause No.
Cause Name
1
Unassigned (unallocated) number
2
No route to specified transit network
3
No route to destination
6
Channel unacceptable
7
Call awarded and being delivered in an established channel
16
Normal call clearing
17
User busy
18
No user responding
19
User alerting, no answer
21
Call rejected
22
Number changed
26
Non-selected user clearing
27
Destination out of order
28
Invalid number format (incomplete number)
29
Facility rejected
30
Response to STATUS INQUIRY
31
Normal, unspecified
34
No circuit/channel available
38
Network out of order
41
Temporary failure
42
Switching equipment congestion
43
Access information discarded
44
Requested circuit/channel not available
47
Resource unavailable, unspecified
49
Quality of service unavailable
50
Requested facility not subscribed
57
Bearer capability not authorized
58
Bearer capability not presently available
63
Service or option not available, unspecified
65
Bearer capability not implemented
66
Channel type not implemented
69
Requested facility not implemented
70
Only restricted digital information bearer capability is
available
79
Service or option not implemented, unspecified
81
Invalid call reference value
82
Identified channel does not exist
83
A suspended call exists, but this call identity does not
84
Call identify in use
85
No call suspended