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Administrator’s Guide for the VSX Series
3 - 20
3. Select and configure these settings:
The ISDN BRI Numbers screen also displays the country selected as the
system’s location and the country code used for international calls to the
system. To specify the system’s location, go to System > Admin Settings
> General Settings > Location. The system automatically supplies the
country code when you specify the country.
4. If you have configured the
ISDN switch protocol to be AT&T 5ESS
Multipoint, NI-1, or Nortel DMS-100, select and enter the ISDN BRI
SPIDs provided by your service provider.
After you enter the SPIDs, the system verifies them. 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 you do not have the SPIDs from your service provider, you can click
Start to Auto Detect SPIDs.
ISDN Switch
Protocol
Specifies the protocol used by your network’s switch.
ISDN Voice
Algorithm
Specifies which voice algorithm (aLaw or uLaw) is used for
ISDN voice calls.
Do not change this setting unless you experience audio issues
in all ISDN voice calls.
Auto BRI
Configuration
Allows the NI-1 switch to automatically configure the directory
numbers and SPIDs.
This setting is only available if you have selected the NI-1
switch protocol.
Setting Description
Setting Description
Area Code Specifies the area code for this system’s location.
Directory
Numbers
Specifies the numbers assigned to the B1 and B2 channels for
each BRI line.
The two numbers for a line may be the same or different,
depending on the switch protocol in use.
Enable Specifies whether to enable the associated ISDN line.
If you selected Standard ETSI Euro-ISDN protocol, you must
enable all BRI lines that you expect to be active, and you must
not enable lines that will not be connected.
You may want to disable a particular line if there are problems
with the line that generate continuing error messages.