Xerox WorkCentre Pro 423 Service Manual page 123

Reason display value (q.931)
The information element "Reason display" is used in DISC, STATUS, and other signals to
indicate the reason for signal generation. D-channel disconnection can be determined also
from "generation source" indicating the signal source (network or equipment).
"Display value" in the table is a hexadecimal value indicated in the FF of each signal.
"Number" in the rightmost column of the table is a unique number (decimal) indicating the
contents of each reason. This value is used to inquire the carrier (NTT or other) or other
manufacturer.
List of reason display values in information element "Reason display"
Reason
Display
value
(hex)
81 Missing
82 No route to relay network
83 No route to relay network *(See supplemental
explanation)
86 Channel disabled
87 Termination at preset channel
90 Normal disconnection
91 Terminating user busy
92 No response from terminating user (No ALERT
or CONN) *
93 No response from terminating user after
alerting (ALERT received) *
94 Subscriber not present (No wireless
communication with remote mobile station)
95 Communication rejected
96 Remote subscriber number changed
Non-selected user recovered from
9A
disconnection
9B Unable to activate terminating interface (Fault
or power-off)
9C Termination number of invalid format or not
complete (too short) *
9D Requested facility not available from network
9E Response to status inquiry
9F Other normal class
A2 No line or channel for use
A6 Network fault
A9 Temporary network fault (Connectable by
redialling)
AA Switchboard congestion
WorkCentre Pro 423/428
Diagnostic information
(May be added)
-
Relay network
-
-
-
* -
-
-
-
-
-
New subscriber
number
-
-
-
Facility identifier
-
-
-
-
-
-
Display
value
(hex)
AB Information elements partially discarded by
network
AC Requested line or channel not available
AF Other resources unavailable class
B1 Requested service quality (QOS) not available
B2 Requested additional service not under
Number
contract
(decimal)
B9 Requested transmission capability not
permitted by network
#1
BA Requested transmission capability not available
#2
now
#3
BF Other service unavailable class
C1 Requested transmission capability not provided
#6
by network
#7
C2 Non-provided channel type specified
#16
C5 Non-provided additional service requested
#17
C6 Only limited digital information transfer
#18
capability available
CF Other service non-provided class
#19
D1 Invalid call number in use
D2 Invalid channel number in use
#20
D3 Specified suspended call ID number not in use
D4 Suspended call ID number in use
#21
D5 Restart request for no suspended call in
#22
network
D6 Suspended call already recovered from
#26
disconnection
D7 User not a member of group security (Closed
#27
Users Group)
D8 Terminal attribute mismatch
#28
DB Invalid relay network selected
#29
DF Other invalid message class
#30
E0 Essential information element missing
#31
E1 Message type not defined or provided
#34
E2 Message not matching call status, defined, or
#38
provided
#41
E3 Information element not defined or provided
E4 Invalid information element
#42
03/02
2-91
Reason Diagnostic information
(May be added)
Discarded information
element identifier
-
-
-
Facility identifier
Attribute number or
other
Attribute number or
other
-
Attribute number or
other
Channel type
Facility identifier
-
-
-
Channel type
-
-
-
Cause of disconnection #86
-
* Mismatching
parameter
-
-
Info. element identifier
Message type
Message type
Info. element identifier
Message type
Level 2 Troubleshooting
CHAPTER 2 TROUBLESHOOTING
Number
(decimal)
#43
#44
#47
#49
#50
#57
#58
#63
#65
#66
#69
#70
#79
#81
#82
#83
#84
#85
#87
#88
#91
#95
#96
#97
#98
#99
#100