Network & Communication - Polycom ViewStation FX User Manual

Chapter 6
Network & Communication
Symptom
Error Message occurs
when dialing a video
call.
ISDN: Line Status icons
do not go away so video
calls cannot be made.
ISDN: Line Status icons
do not go away so video
calls can not be made.
ViewStation FX/VS 4000 User's Guide
Cause
If H.320 call, the first line did not
connect. It cannot make a call if
the first line does not connect.
If H.323 call, IP Gateway/
Gatekeeper is not operating or is
not configured correctly.
ISDN line is not present.
ISDN number entered incorrectly.
SPID numbers entered incorrectly.
Note: The AT&T point-to-point
protocol does not require SPIDs.
ViewStation is directly connected
to a U interface.
The ViewStation is connected to
an NT1 then directly to a PBX. The
PBX connection is an S/T
interface.
Your ISDN line is provisioned
incorrectly by your service
provider.
The ViewStation will auto-detect
SPIDS for about 85% of all United
States and Canadian switches.
The ViewStation was not able to
detect your SPID.
Check that your ISDN line is
provisioned for Voice/Data, Voice
Data.
158
Troubleshooting
Solution
Check that all network cables are
properly connected. Restart the
system.
Contact your network administrator.
Check the ISDN line connections.
The ViewStation has an S/T interface
and requires an NT1 to be connected
between the ViewStation and your
ISDN line, unless the ViewStation is
connected to a PBX. See below.
Check the ISDN numbers with your
service provider.
Reset the system by going to the
Reset menu under the Diagnostics
menu. Run Automatic SPID
detection again. Make sure your
ISDN numbers are entered correctly.
Install an NT-1 between your ISDN
line and the ViewStation ISDN
connection.
You do not need an NT1 when
connecting to a PBX. Connect the
ViewStation directly to the PBX S/T
connection. You may need to use an
ISDN terminating resistor on the
ISDN line between your ViewStation
and the PBX.
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.
You may want to contact your ISDN
provider and ask them to switch your
line to the NI 1 protocol standard.
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