Comtrol InterChange VS 3000 Series Installation And Configuration Manual page 60

ISDN Cause Codes
Table 5. ISDN Cause Codes (Continued)
Decimal Brief Description
Invalid transit
91 network selection
(national use)
Invalid message,
95
unspecified
Mandatory
96 information element
is missing
Message type non-
97* existent or not
implemented
Message not
compatible with call
98*
state or message type
non-existent
Information element/
parameter
99*
non-existent or not
implemented
Invalid information
100*
element contents
Message not
101 compatible with call
state
Recovery on timer
102
expire
60
Expanded Description
The transit network identification is in
an incorrect format as defined in Annex
C/Q.931.
No other invalid-message cause code
applies.
The information element is wrong.
Typically, the switch software type has
been defined incorrectly.
The sending equipment has received a
message with a message type it does not
recognize. Either this message is not
defined or defined but not implemented.
The sending equipment received a
message such that the procedures do not
indicate that this is a permissible
message to receive while in the call state,
or a STATUS message was received
indicating an incompatible call state.
The sending equipment received a
message that includes information
elements or parameters not recognized.
The information was discarded. The
information element is not required to be
present in the message in order for the
sending equipment to process the
message.
The sending equipment received an
information element that it has
implemented; however, one or more fields
in the I.E. are coded but not
implemented. Usually indicates a wrong
switch type in customer premises
equipment.
A message has been received that is
incompatible with the call state.
A procedure has been initiated by the
termination of a timer in association with
error handling procedures.