Polycom VSX 7000 Administrator's Manual page 99

Symptom
ISDN: Line Status icons do
not go away so video calls
cannot be made.
ISDN: Error message when
dialing a video call.
ISDN: When placing a call,
progress indicators do not
turn green.
The System Information
screen shows "waiting" in
the IP Video Number field.
© Polycom, Inc.
Cause
The system is not connected to an
ISDN network.
The ISDN number is entered
incorrectly.
The SPID numbers are entered
incorrectly.
Note: The AT&T point-to-point protocol
does not require SPIDs.
The Quad BRI network interface
module is directly connected to a U
interface.
The system is connected to an NT-1
then to a PBX.
The ISDN line is provisioned
incorrectly by the ISDN network
service provider.
The system was not able to auto-detect
SPIDs.
The VSX system is in an unknown
state.
An ISDN cause code is received from
the ISDN line.
The call progress icons do not turn
green to indicate that the call
connected properly.
The LAN is not working.
The DHCP server is not available.
Chapter 6 - Diagnostics and General Troubleshooting
Solution
Check the ISDN line connections.
Check the ISDN numbers with your
service provider.
Select the Clear icon on the Auto Detect
SPIDs page, and then select the Start icon
to automatically detect the new SPIDs.
Make sure your ISDN numbers are
entered correctly.
Install an NT-1 device between your
network interface module and the ISDN
connection.
You do not need an NT-1device when
connecting to a PBX. Connect the system
directly to the PBX S/T connection.
Check that your ISDN line is provisioned
for Voice/Data, Voice/Data.
Check with your ISDN service provider
and enter the SPIDs and switch protocol
manually. Note: The AT&T point-to-point
protocol does not require SPIDs.
Power off the system, wait five seconds,
and power on the system.
Try the call again.
For more information, please refer to
Q.850 Cause Codes on page
Try the call again.
Check the LAN connection.
Contact your network administrator.
Contact your network administrator to
correct the problem with the server or to
assign a static IP address.
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