Polycom VSX Series Setting Description Isdn Switch, Protocol Isdn Voice, Algorithm, Auto BRI

Administrator’s Guide for the VSX Series

Setting	Description
ISDN Switch	Specifies the protocol used by your network’s switch.
Protocol
ISDN Voice	Specifies which voice algorithm (aLaw or uLaw) is used for
Algorithm	ISDN voice calls.
	Do not change this setting unless you experience audio issues
	in all ISDN voice calls.
Auto BRI	Allows the NI-1 switch to automatically configure the directory
Configuration	numbers and SPIDs.
	This setting is only available if you have selected the NI-1
	switch protocol.

3.Select and configure these settings:

Setting	Description
Area Code	Specifies the area code for this system’s location.
Directory	Specifies the numbers assigned to the B1 and B2 channels for
Numbers	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.

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.

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