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152Appendix
Appendix
Global Management System User’s Guide
ISDN Cause Codes
Cause
Code
Cause Description Denition
96
Mandatory information
element is missing
The receiving equipment received a message that did not
include one of the mandatory information elements. This
is usually due to a D-channel error. If this error occurs
systematically, report it to your ISDN service provider.
97
Message type nonexistent
or not implemented
The receiving equipment received an unrecognized message,
either because the message type was invalid or because the
message type was valid but not supported. Cause 97 is due to
either a problem the local D channel.`
98
Message incompatible with
call state or message type
nonexistent.
The remote equipment received an invalid message, and
no standard cause applies. Cause 98 is usually due to a D-
channel error. If this error occurs systematically, report it to
your ISDN service provider.
99
Information element
nonexistent or not
implemented
The remote equipment received a message that includes
information elements, which were not recognized. This
is usually due to a D-channel error. If this error occurs
systematically, report it to your ISDN service provider
100
Invalid information element
contents
The remote equipment received a message that includes
invalid information in the information element. This is usually
due to a D-channel error.
101
Message not compatible
with call state
The remote equipment received an unexpected message that
does not correspond to the current state of the connection.
This is usually due to a D-channel error.
102
Recovery on timer expiry A timer expiry initiated an error-handling (recovery) procedure.
This problem is typically temporary.
111
Protocol error, unspecied An unspecied D-channel error when no other standard cause
applies.
127
Interworking, unspecied An event occurred, but the network does not provide causes
for the action that it takes. The precise problem is unknown.
145
ISDN layer 1 and/or 2 link
not established.
User needs to check cabling, ISDN adapter status and network
connections.
146
ISDN layer 3 connection to
the ISDN switch/network
inactive.
A switch protocol error exists, or (in the United States or
Canada) a SPID assignment problem. There is either a switch
protocol error, or (in the United States or Canada) a SPID
assignment problem.
255
ISDN command processing
error
The ISDN signaling code has encountered an error processing
an ISDN action. ISDN adapter busy-wait and retry.