Black Box ISU2011-8-UK manual Troubleshooting, BRI-Hub, Fault, Problem, How to clear the problem

BRI-Hub

Troubleshooting

Fault	Problem	How to clear the problem
Pwr-LED is off	BRI-Hub is powered off	Plug in power adaptor
	No mains power	Check for main power
	Faulty power adaptor	Use other compatible power adaptor. Check
		polarity!
	For BRI-HUB-S only:	Use original power adapter
	loss of power inside NT
	or PABX
	BRI-Hub is faulty	Please return the device to your dealer.
Specific devices	Cable shorts	Use another port for test.
on a port do not
operate via the		Check for cabling faults.
BRI
	Faulty terminal	Check with other equipment
	equipment
	Cable too long	Connect TE directly to the BRI-Hub for test
Only devices at	A BRI-HUB is used	Power on the BRI-HUB
port 1 may	which is in the power
communicate	down mode

If you are still having problems with you BRI-Hub, please call Black Box technical Support.

TECHNICAL: 0118 931 2233 15