Polycom VS4000 Administrator's Manual page 160

Administrator's Guide for ViewStation EX, ViewStation FX, and VS4000
C-2
Code Cause
16 Normal call clearing
17 User busy
18 No user responding
19 No answer from user
(user alerted)
21 Call rejected
22 Number changed
26 Non-selected user
clearing
27 Destination out of
order
28 Invalid number
format
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
Definition
The originator or receiver of the call has requested that
it be cleared.
All B channels are in use; the called system
acknowledges the connection request, but is unable to
accept the call.
The destination equipment does not respond to the call,
so the connection cannot be completed.
The destination equipment did not complete the
connection within the prescribed time after responding
to the connection request. The problem is at the remote
end of the connection.
The destination equipment is capable of accepting the
call, but has rejected it for an unknown reason.
The ISDN number used to set up the call is no longer
valid. (The diagnostic field of the message may return
an alternate address assigned to the called equipment.)
The destination is capable of accepting the call, but did
not assign it to the user.
A signaling message cannot be delivered because the
interface is not functioning correctly, and the destination
cannot be reached. This condition might be temporary;
for example, remote equipment might be turned off.
Destination address was incomplete or presented in an
unrecognizable format, which prevented the connection
from being established.
The network cannot provide the facility requested by the
user.
The equipment returns this message when it receives a
STATUS INQUIRY message.
A normal event has occurred with no standard cause
applying. No resulting action is required.
The call cannot be taken because no appropriate
channel is available to establish the connection.
A network problem prevented the call from reaching its
destination. Attempts to reconnect will probably fail until
the network problem is corrected.
A network error occurred. The problem will be resolved
shortly. Attempts to reconnect may succeed.
The destination cannot be reached because the
network switching equipment is temporarily overloaded.
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