Composite Video Cable; Q.850 Cause Codes - Polycom V500 Administrator's Manual

Composite Video Cable

Q.850 Cause Codes

Composite Video Cable 2457-08674-001
The following table describes codes that the ISDN switch sends to the
V500 system to indicate call status. Although the codes are standardized, each
ISDN service provider defines them differently. Because of this, the definitions
in the table may not exactly match the messages that you see.
Code Cause
1 Unassigned number
2 No route to specified
transit network
3 No route to
destination
6 Channel
unacceptable
Definition
The switch received the sent ISDN number in the
correct format, but no destination equipment uses
the number.
The ISDN exchange does not recognize the
intermediate network through which to route the
call.
The intermediate network through which the call is
routed does not serve the destination address.
The specified channel does not provide adequate
service quality to accept the requested
connection.
Appendix
Appendix - 5