3Com 5000 ATM manual Troubleshooting

6	TROUBLESHOOTING
	Troubleshooting Using LEDs	6-1
	Troubleshooting Base Module LEDs			6-1
	Verifying Base Module LED Operation				6-1
	Reading the Base Module LEDs			6-2
	Determining Corrective Action			6-3
	Troubleshooting ATM OC-3 Card LEDs				6-4
	Recovering from Problems	6-5
	Verifying DMM Communication			6-5
	Verifying Software Versions		6-6
	Verifying Critical Parameters		6-7
	Verifying ATM OC-3 Card Functions 6-7
	Verifying ATM Signaling Functions			6-8
	Verifying LEC Functions	6-9
	Verifying Bridging Configuration			6-11
	Verifying Data Movement	6-11
	Verifying ATM OC-3 Switchover			6-12
	Resetting the ATM Backbone SwitchModule				6-12
	Using the Reset Button	6-12
	Obtaining Technical Assistance		6-13
A
	SPECIFICATIONS
	Environmental Specifications	A-1
	Mechanical Specifications A-1
	Power Specifications A-2
	ATM OC-3 Card Fiber Optic Specifications				A-2