Polycom VSX 3000 Administrator's Manual page 191

Code Cause
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
PathNavigator Error Codes and Q.850 Cause Codes
Definition
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The ISDN number used to set up the call is no
longer valid.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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