Nortel Networks AN/DC manual Powering On and Off, Color Meaning Ethernet UTP2 interface

Installing and Operating AN/DC and ANH-8/DC Systems

Table 4-4 describes the back-panel LEDs.

Table 4-4.	Back-Panel LEDs
LED		Color	Meaning
Ethernet UTP2 interface
TX (Transmit)		Green	Lights when the ANH-8/DC is transmitting data over
			the network.
RX (Receive)		Green	Lights when the ANH-8/DC is receiving data from the
			network.
COL (Collision)		Amber	Lights when the ANH-8/DC detects a collision on the
			network.
ISDN/BRI interfaces
ISDN BRI		Green	Lights when S/T interface is active; turns off when
			interface is inactive.

Powering On and Off

The DC power switch allows you to restart the router without having to disconnect the power supply wires. When the power switch is turned off, the outputs of the power supply shut off, but the front end is still active.

Danger: Once the AN/DC is connected to the power source, the central office must shut off the circuit breaker to remove the wires to the power supply.

To power on an AN/DC or ANH-8/DC:

1.Press the power switch to the On position (1); that is, toggle the switch down.

For the AN/DC, see Figure 4-4. For the ANH-8/DC, see Figure 4-5.

Note: If the AN/DC or ANH-8/DC does not power on, check the polarity of the connections to the power source. If polarity has been reversed, the router will not power on. If polarity is correct and the AN/DC or ANH-8/DC does not power on, contact the Nortel Networks Technical Response Center.

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