Polycom VSX 3000 Administrator's Manual page 193

Code Cause
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
43 Access information
discarded
44 Requested
circuit/channel not
available
47 Resource
unavailable,
unspecified
49 Quality of service
unavailable
50 Requested facility
not subscribed
Definition
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.
The requested access information cannot be
provided by the network. The diagnostic message
may explain the problem.
The remote equipment cannot provide the
requested channel. This may be temporary.
An unknown problem prevents the remote
equipment from providing the requested resource.
The network cannot provide the requested quality
of service (as defined by CCITT recommendation
X.213). This may be a subscription problem.
The remote equipment is capable of providing the
requested supplementary service, but is not
subscribed to it.
Appendix
Appendix - 7