Polycom Audio and Video - Manual (Page 103)

Chapter 7 - Diagnostics and General Troubleshooting
© Polycom, Inc. 7 - 11
Calling
Symptom Problem Corrective action
Error message occurs
when placing an IP
(H.323) call. The system is not
connected to the LAN. Verify that the LAN cable is connected properly.
The system’s LAN cable is
bad. Replace the system’s LAN cable.
The far site is not
connected. Use the PING test (System > Diagnostics > Network >
PING) to determine whether the far site is accessible to
your system. If the test fails, the far site system is
unavailable.
The system is not
configured correctly for the
network. Check your IP configuration.
The IP
Gateway/Gatekeeper is
not operating or is not
configured correctly. Contact the gatekeeper/gateway administrator or network
service provider.
ISDN: Line Status icons
do not go away so video
calls cannot be made. The system is not
connected to an ISDN. Check the ISDN line connections.
The ISDN number is
entered incorrectly. Check the ISDN numbers with your service provider.
The ISDN line is
provisioned incorrectly by
the ISDN service provider. Check that your ISDN line is provisioned for Voice/Data.
The V500 web interface is
in an unknown state. Power off the system, wait five seconds, and power on the
system.
The BRI network interface
is directly connected to a U
interface. Install an NT-1 device between your network interface
module and the ISDN connection.
The BRI network interface
is connected to an NT-1
then to a PBX. You do not need an NT-1device when connecting to a
PBX. Connect the system directly to the PBX S/T
connection.
The system was not able to
auto-detect SPIDs, or the
SPID numbers are entered
incorrectly.
Note: The AT&T
point-to-point protocol
does not require SPIDs.
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.
Check with your ISDN service provider and enter the
SPIDs and switch protocol manually.
ISDN: When placing a
call, progress indicators
do not turn green. The call does not connect
properly. Try the call again.