Polycom ViewStation FX User Manual page 216

Appendix F
Code
Call awarded and
7
delivered
16 Normal call clearing
17 User busy
18 No user responding
No answer from user
19
(user alerted)
21 Call rejected
22 Number changed
Non-selected user
26
clearing
27 Destination out of order
28 Invalid number format
29 Facility rejected
Response to STATUS
30
ENQUIRY
31 Normal, unspecified
No circuit/channel
34
available
ViewStation FX/VS 4000 User's Guide
(Continued)
Cause Definition
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
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 can not 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 prevented the connection
from being established.
The network can not provide facility requested by
the user.
The prior receipt of a status inquiry message
generated the status message.
A normal has occurred with no standard cause
applying. No resulting action is required.
The call can not be taken because no appropriate
channel is available to establish the connection.
202
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