Comtrol InterChange VS 3000 Series Installation And Configuration Manual page 57

Table 5. ISDN Cause Codes (Continued)
Decimal Brief Description
Invalid number
28 format
(address incomplete)
29 Facilities rejected
Response to STATUS
30
INQUIRY
31 Normal, unspecified
No circuit/channel
34
available
35 Call queued
38 Network out of order
Permanent frame
39 mode connection out-
of-service
Permanent frame
40 mode connection
operational
41 Temporary failure
Switching equipment
42
congestion
Access information
43
discarded
Requested circuit/
44
channel not available
Precedence call
46
blocked
Expanded Description
The called party cannot be reached
because the called number is not in a
valid format or is not complete.
A requested supplementary service
cannot be provided by the network.
This is a confirmation of the receipt of a
STATUS INQUIRY.
No other normal-class cause applies.
There is no appropriate circuit/channel
presently available to handle the call.
The call has been queued at the central
office (CO).
The network is not functioning for
reasons of a long-term nature.
Immediately re-placing the call is not
likely to be successful.
Included in a STATUS message,
indicating a permanently established
frame mode connection is out-of-service
due to equipment or section failure.
The STATUS message indicates a
permanently established frame mode
connection is operational and capable of
carrying user information.
The network is not functioning for
reasons of a short-term nature. You may
attempt another call almost immediately.
The switching equipment generating this
cause is experiencing a period of high
traffic.
The network could not deliver access
information to the remote user as
requested. That is, user-to-user
information, low layer compatibility, high
layer compatibility, or sub-address as
indicated in the diagnostic.
The circuit or channel indicated by the
requesting entity cannot be provided by
the other side of the interface.
There are no pre-emptable circuits or the
called user is busy with a call of equal or
higher pre-emptable level.
ISDN Cause Codes
57