Polycom viewstation fx vs4000 Manual De Usuario

Administrator’s Guide for ViewStation EX, ViewStation FX, and VS4000

7-16

 www.polycom.com/videodocumentation

Placing calls above 
128 Kbps does not 
work. (The Call 
Progress circles do 
not turn green, or 
remain blue after the 
first channel 
connects.)

All

The far site may be unable to 
accept calls above 128 Kbps.

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.

The system displays 
an error message 
when you place an 
ISDN call.

All

The system receives an ISDN 
cause code from the ISDN 
line.

Try the call again.

For more information, please refer to 

The network interface module 
is not connected properly.

Check the cables to the network 
interface module.

BRI only: The first line did not 
connect. The system cannot 
make a call if the first line does 
not connect.

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.

The ISDN switch type is not 
configured correctly on the 
system.

Check the ISDN configuration and 
verify with your ISDN network service 
provider that the system is configured 
correctly.