Nortel Networks Passport ARN Routers manual FT1/T1 and FE1/E1 DSU/CSU LEDs, PAD LEDs, Modem LEDs

Installing and Operating Passport ARN Routers

FT1/T1 and FE1/E1 DSU/CSU LEDs

Table 3-12 describes the FT1/T1 and FE1/E1 DSU/CSU adapter module LEDs.

Table 3-12.	FT1/T1 and FE1/E1 DSU/CSU LEDs
LED		Meaning
Red ALM		Lights when the port is in a red alarm state.
Yellow ALM		Lights when the DSU/CSU receives a yellow alarm signal
		from the network.
Loop		Lights when you set the interface to loopback mode.
Synch		Lights when the port is synchronized with the T1/E1 network.

X.25 PAD LEDs

Table 3-13 describes the X.25 PAD adapter module LEDs.

Table 3-13.	X.25 PAD LEDs
LED		Meaning
TxD		Lights when the X.25 PAD interface transmits data over the
(Transmit Data)		network.
RxD		Lights when the X.25 PAD interface receives data from the
(Receive Data)		network.

V.34 Modem LEDs

Table 3-14 describes the front-panel V.34 modem adapter module LEDs.

Note: The ARN back-panel supports an optional V.34 Console Modem module. Table 3-14 also applies to these LEDs.

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