ADTRAN 1200305L1 Feature Description Option Module LEDs, ACO Switch, Craft Port, Atlas 550 LEDs

ATLAS 550 System Manual			Section 2, Engineering Guidelines
Table 2. ATLAS 550 Front Panel Description (Continued)
Feature			Description
Option Module LEDs		Displays (by row) the operational condition of each module installed in the
		option slots. (See Table 3 on page 27.) All LEDs will be off if no option
		module is installed.
Status		Indicates the operational condition of modules installed in the option slots.
Online		Indicates whether the module is available for use or is currently in use. If
		the module is manually taken offline, this LED is turned off.
Test		Indicates that one or more ports within a module are in test.
ACO Switch		Clears the Alarm Relay connection located on the rear panel of the ATLAS
		550.
CRAFT Port		Allows the ATLAS 550 to connect to a computer or modem using the
		CRAFT port (an RJ-45 port).
		Table 3. ATLAS 550 LEDs
For these LEDs...	This color light...		Indicates that...
Power	Green		the unit is on.
	Off		the unit is off.
Ethernet	Green (solid)		the physical link is up.
	Green (flashing)		there is activity on the LAN.
	Off		the physical link is down - no Ethernet connection.
Remote	Yellow		a user is logged in the system via CONTROL/CRAFT
			port or via Ethernet.
	Off		there are no users logged into the system.
System	Green (solid)		no diagnosed system faults were found.
	Green (fast blink)		a flash download is in progress.
	Yellow (solid)		a fault was diagnosed, but the condition no longer exists.
			The condition will be recorded in the system log.
	Red (solid)		an error condition with either the power supply or the
			system temperature is present.
	Red (fast blink)		a fatal error occurred during flash download.
	Off		power is not currently supplied to the system.

61200305L1-1F © 2002 ADTRAN, Inc. 27