User`s guide

A-4 Preliminary November 23, 1998 MultiVoice Gateway for the MAX— User’s Guide
Troubleshooting
LEDs
flt This LED is ON in one of two cases—either a hardware
self-test is in progress or there is a hardware failure.
When a hardware self-test is in progress, the LED is ON. If
any type of hardware failure occurs, the LED flashes. If the
failure is isolated to an expansion card, the MAX may
continue functioning without the expansion card.
coll This LED is ON if there are collisions on the Ethernet.
la (left-most—for Line 1) This LED is ON when the link is active and there are no
pending alarms or tests. If a PRI is active and using
D-channel signaling, this LED blinks when the unit is unable
to establish layer 2 and 3 protocol communications with the
central office switch. This may indicate a configuration error.
aui This LED is ON to reflect the AUI interface.
ra (left-most—for Line 1) This LED is ON when the MAX is receiving a Red Alarm
pattern, indicating an improper receive signal or no receive
signal. This condition can occur as a result of a high error
rate or improper line configuration. When such a condition
arises, this red LED is ON and a Yellow Alarm is transmitted
toward the WAN.
coax This LED is ON if the 10Base-2 interface is chosen.
utp This LED is ON if the 10BaseT interface is chosen.
ra, ya, and la
(righ-most—for Line 2)
These LEDs have the same meanings as their left-most
counterparts, except they apply only to Line 2.
Table A-3. MAX 2000 LEDs
LED Description