Polycom RMX 1500 Administrator's Manual page 843

Table A-2 ISDN Disconnection Causes (Continued)
Number Summary
21 Call Rejected
22 Number
Changed
26 Non-Selected
User Clearing
27 Destination Out-
of-Order
28 Invalid Number
Format (address
incomplete)
29 Facility Rejected
30 Response to
STATUS
ENQUIRY
31 Normal,
Unspecified
34 No Circuit/
Channel
Available
38 Network Out-of-
Order
39 Permanent
Frame Mode
Connection Out-
of-Service
Disconnection Cause
Description
Called number is either busy or has
compatibility issues. Supplementary service
constraints in the network may also initiate the
disconnection.
Same as Cause 1. The diagnostic field contains
the new called user number. Cause 1 is used if
the network does not support this cause value.
The incoming call has not been assigned to the
user.
Messages cannot be sent to the destination
number because the span may not be active.
The Type of Number (TON) is incorrect or the
number is incomplete. Network, Unknown and
National numbers have different formats.
User requested supplementary service which
cannot be provided by the network.
A STATUS message has been received in
response to a prior STATUS ENQUIRY.
A normal, unspecified disconnection has
occurred.
No B-Channels are available for the call.
Network is out-of-order because due to a major
malfunction.
A permanent frame mode connection is out-of-
service. This cause is part of a STATUS
message.
Chapter A-Disconnection Causes
A-11