AT-4016F Installation Manual
25
ATM Interface LEDs
The AT-4016F supports an additional set of indicators that convey
diagnostic and status information about the ATM Physical Interface. The
location of these indicators is shown in Figure 21.
ATM Port LEDs
ONLINE (Solid Green)—Indicates that the ATM Physical Interface is
active (enabled).
SYNC (Synchronization) (Solid Green)—Indicates that the ATM Physical
Interface has synchronization.
LOS (Loss Of Signal) (Amber)—Indicates that the ATM Physical Interface
is experiencing a Loss Of Signal or the cables are not installed.
Alarms LEDs
RED (Amber)—A RED Alarm on the ATM Physical Interface indicates
either the system is rebooting or there is a signal failure condition at the
source.
YELLOW (Amber)—A YELLOW Alarm on the ATM Physical Interface
indicates to the AT-4016F (source device) has a signal failure condition at
the destination (sink device). This is usually associated with DS3/E3
interfaces.
BLUE (Amber)—A BLUE Alarm Indication Signal or AIS Alarm indicates
that a different signal has replaced the normal traffic signal when a
maintenance alarm indication has been activated. An AIS is also referred
to as a “Blue Alarm,” “Alarm Inhibit Signal” or “Keep Alive Signal.”
LOOP LEDs
LOOP-IN (Green)—Indicates that any TX traffic on the ATM Physical
Interface will be looped back to AT-4016F RX inputs.
LOOP-OUT (Green)—This indicates that any RX traffic on the ATM
Physical Interface will be looped back to the ATM Interface TX connection.
Figure 21: ATM Interface
LEDs