Polycom VS4000 Administrator's Manual page 138

Administrator's Guide for ViewStation EX, ViewStation FX, and VS4000
Symptom
Placing calls above
128 Kbps does not
work. (The Call
Progress circles do
not turn green, or
remain blue after the
first channel
connects.)
The system displays
an error message
when you place an
ISDN call.
7-16
System Cause
All The far site may be unable to
accept calls above 128 Kbps.
All The system receives an ISDN
cause code from the ISDN
line.
The network interface module
is not connected properly.
BRI only: The first line did not
connect. The system cannot
make a call if the first line does
not connect.
The ISDN switch type is not
configured correctly on the
system.
Solution
Go to the Call Status screen. Highlight
each of the circles for each of the
channels dialed. The number dialed for
each channel will be displayed as you
highlight the corresponding circle.
Make sure that the far site has entered
the number for each of its ISDN lines
correctly. The numbers for Line 1 - Line
4 should correspond to connections 1 -
4 on the Quad BRI network interface
module.
Try the call again.
For more information, please refer to
Troubleshooting Notes on page
Check the cables to the network
interface module.
Be sure you are calling the correct
number. The number may need to
include:
• a digit for an outside line
• a long distance access code
• an international access code
• a country code
• an area code or city code
Check that all network cables are
properly connected.
Power off the system, wait five
seconds, and power on the system.
Then wait about two minutes to allow
the ISDN lines to resynchronize.
Ask the person at the far site to call your
system.
Check the ISDN configuration and
verify with your ISDN network service
provider that the system is configured
correctly.
www.polycom.com/videodocumentation
C-1.