Polycom VS4000 - page 62

Administrator’s Guide for ViewStationEX, ViewStation FX, and VS4000
3-14 www.polycom.com/videodocumentation
To configure Inverse Multiplexer (IMUX) settings:
1. Go to System Info > Admin Setup > Video Network > IMUX.
2. Choose each icon and configure the settings on the corresponding screens:
Choose... Then do this...
Numbers 1. Specify the area code for this system’s location.
2. Specify the numbers assigned to the B1 and B2 channels for
each line.
The two numbers for a line may be the same or different,
depending on the switch protocol in use.
SPIDs
(for Quad BRI with
NT-1 device only)
1. If the system is on a PBX, select PBX. You will not need to do
any further configuration on this screen.
Note: The PBX selection is not available on the web interface. If
you are configuring the system from the web interface, and the
system is on a PBX, skip this screen.
2. If the system is not on a PBX, and you have configured ISDN
switch protocol to be AT&T 5ESS Multipoint, NI-1, or Nortel
DMS-100, specify the system’s SPIDs. The system then verifies
the numbers. If the system is unable to verify the SPIDs, make
sure the system is connected and that the ISDN numbers you
entered are correct.
If the system is located in the United States or Canada, you can
have the system detect the SPIDs automatically.
3. Select Start.
Audio Quality Specify the minimum bandwidth allowed for calls using the G.722
algorithm. All calls below this bandwidth use the G.728 algorithm.
Advanced Dialing Specify whether to dial the ISDN channels all at once or one at a
time.
If you choose to dial channels one at a time, each channel is
dialed only after the previous channel connects Use this setting if
you experience problems dialing all channels at once.
Dialing Speeds Select the call rates that users can choose for making calls.
•Nx56 and Nx64 rates are available for ISDN calls.
•IPx56 and IPx64 rates are available for IP calls.