Multitech CommPlete MTPRI-HD23B User Manual page 11

LED Indicator
PHYSICAL LINK
DATA LINK
RED ALARM
YELLOW ALARM
DATA CHANNEL
CONTROL
LED Indicator
HOST FIFO
HEART BEAT
SYSTEM ERROR
CHANNEL CLOCK
CommPlete Communications Server
Figure 1. PRI Card Front Panel
Color Indication
Green Lit - Indicates LEC circuit connection is active and signaling is
correct.
Off - Indicates absence of valid LEC circuit signaling.
Green Lit - Indicates reception of a Link Up message from LEC.
Off - Indicates a reception of a Link Down message from LEC.
Red Lit - Indicates red alarm pattern is being received
indicating an improper receive signal or no receive signal. This
alarm can occur as a result of a high error rate or improper line
configuation. When this alarm occurs a yellow alarm is sent to the
other end of the network
Off - Indicates normal operation
Yellow Lit - Indicates yellow alarm
Off - Indicates normal operation
Green Changes state with each D-Channel message
Green Not Currently used.
Color Indication
Green Blinks - Indicates FIFO interrupt during normal operation.
Green Lit - Indicates unrecoverable error
Blinking - Blinking at a one-second rate indicates normal operation.
Red Lit - Main processor failure (possibly FLASH is not programmed or
destoryed).
Green Momentarily lits when startup self test is completed.
1 Introduction
3