Polycom ReadiManagerLX100 Management Manual page 133

Appendix
ISDN Cause Codes
Cause
Code
1
2
3
6
7
16
17
18
19
21
22
25
27
28
Polycom ReadiManager LX100 User Guide
Cause Description
Unassigned number
No route to specified transit
network
No route to destination
Channel unacceptable
Call awarded and delivered
Normal call clearing
User busy
No user responding
No answer from user (user
alerted)
Call rejected
Number changed
Non-selected user clearing
Destination out of order
Invalid number format
Definition
The switch received the sent ISDN number in the correct format; however, no
destination equipment uses the number.
The ISDN exchange cannot recognize the intermediate network through
which to route the call.
The intermediate network through which the call is routed does not service
the destination address.
The specified channel does not provide sufficient service quality to accept the
requested connection.
The user is assigned an incoming call that is being connected to an already-
established call channel.
Normal call clearing has occurred.
All B channels are in use; the called system acknowledges the connection
request, but is unable to accept the call.
The destination does not respond to the call so the connection cannot be
completed.
The destination fails to complete the connection within the prescribed time
after responding to the connection request. The problem occurs at the remote
end of the connection.
The destination rejects the call for an unknown reason, although capable of
accepting the call.
No system has been assigned the ISDN number used to set up the call. (The
diagnostic field of the message may return an alternate address is assigned
to the called equipment.)
The destination rejected the call, although capable of accepting it, because
the call was not assigned to the user.
A signaling message cannot be delivered because the interface is not
functioning correctly, and therefore the destination can not be reached. This
condition might be temporary, though of extended duration; for instance,
remote equipment might be turned off.
Destination address presented in an unrecognizable format or an incomplete
destination address made the connection unable to be established.
Appendix 126