Polycom HDX Series Administrator's Manual page 137

Symptom
System displays a
message indicating network
congestion when placing an
ISDN call immediately after
starting the system.
ISDN: Line Status icons do
not go away so video calls
cannot be made.
ISDN: When placing a call,
progress indicators do not
turn green.
Problem
This can occur if the system
uses a PRI E1 network
interface module that is
connected to an Adtran
Atlas 800 Plus module.
After power on, the Adtran
module must complete
channel restarts before the
system can complete ISDN
calls.
The system is not
connected to an ISDN.
The ISDN number is
entered incorrectly.
The ISDN line is
provisioned incorrectly by
the ISDN service provider.
The system is in an
unknown state.
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.
The call does not connect
properly.
Corrective action
Wait about three minutes and try the call again.
Check the ISDN line connections.
Check the ISDN numbers with your service provider.
Check that your ISDN line is provisioned for
Voice/Data.
Power off the system, wait five seconds, and power
on the system.
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.
Note: The AT&T point-to-point protocol does not
require SPIDs.
Try the call again.
Troubleshooting
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