Polycom VSX Series manual Symptom Problem Corrective action

Administrator’s Guide for the VSX Series

Symptom	Problem	Corrective action
ISDN: Line Status icons do	The system is not	Check the ISDN line connections.
not go away so video calls	connected to an ISDN.
cannot be made.
	The ISDN number is	Check the ISDN numbers with your service provider.
	entered incorrectly.
	The ISDN line is	Check that your ISDN line is provisioned for
	provisioned incorrectly by	Voice/Data.
	the ISDN service provider.
	The VSX system is in an	Power off the system, wait five seconds, and power
	unknown state.	on the system.
	The Quad BRI network	Install an NT-1 device between your network
	interface is directly	interface module and the ISDN connection.
	connected to a U interface.
	The Quad BRI network	You do not need an NT-1device when connecting to
	interface is connected to an	a PBX S/T interface. Connect the system directly to
	NT-1 then to a PBX S/T	the PBX S/T connection.
	interface.
	The system was not able to	Select the Clear icon on the Auto Detect SPIDs
	auto-detect SPIDs, or the	page, and then select the Start icon to automatically
	SPID numbers are entered	detect the new SPIDs. Make sure your ISDN
	incorrectly.	numbers are entered correctly.
	Note: The AT&T	Check with your ISDN service provider and enter the
	point-to-point protocol does	SPIDs and switch protocol manually.
	not require SPIDs.	Note: The AT&T point-to-point protocol does not
		require SPIDs.
ISDN: When placing a call,	The call does not connect	Try the call again.
progress indicators do not	properly.
turn green.
	The NT-1 device is not	Verify power on the NT-1 device.
	powered on.
ISDN: Calls cannot be	There is a problem with the	Check for other problems listed in this table.
completed successfully.	VSX system or between it
The green light on the NT-1	and the NT-1 device.
device flashes slowly.
ISDN: Calls cannot be	There is a problem on the	Contact your ISDN service provider.
completed successfully.	network side of the NT-1
The green light on the NT-1	device.
device flashes rapidly.

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