Nortel Networks 8600 manual MCC Card

LEDs

MCC Card

SYSTEM

OK

Alrm

Test

ETHERNET

TX

RX

Coll

MCC

8000

97-15386

The MCC card provides diagnostic connectivity to the HotWire 8600/8800 DSL cards. It provides the circuitry for both Ethernet and serial interfaces to the HotWire 8600 DSLAM chassis. The MCC card provides mid-level management functions for SNMP management of the DSL cards.

The following table describes the meaning and states of the LEDs on the MCC card faceplate.

Type	LED	LED is . . .	Indicating . . .
SYSTEM	OK	Green,	Normal operation; card functioning normally.
		Winking*
		Off	No power to card or card failure.
	Alrm	Amber	Alarm present on MCC.
		Off	Normal operation; no alarms.
	Test	Amber	Test in progress.
		Off	Normal operation; no tests.
ETHERNET	TX	Green,	Data is being transmitted from the MCC.
		Blinking
		Off	Inactive
	RX	Green,	Data is being received.
		Blinking
		Off	Inactive
	Coll	Off	Normal operation.
		Amber,	A collision has been detected.
		Blinking

*Winking describes a recurring pulse when the LED is ON longer than OFF at a ratio of approximately 10:1.

A-2 October 1997 8600-A2-GN20-20