Cabletron Systems CSMIM-T1 Installation Manual page 87

LED(s)
NETWORK ALARMS
ON LINE
DI SYNC
SYSTEM
Ethernet Channel
Indicators A, B, and C
CSMIM-T1 Hardware Installation Guide
Description
RED - RED alarm indicator is ON during a locally
detected carrier failure. During the RED alarm
condition, a YELLOW alarm is transmitted across the
telephone network.
YEL - YELLOW alarm indicator is ON when receiving
a YELLOW alarm condition from the telephone
network.
BLUE alarm indicator is ON when receiving
BLU -
an unframed, all-ones Alarm Indication Signal
(AIS) from the network. This condition exists upon
a loss of originating signal, or when any action is
taken that would cause a signal disruption.
This LED is green and ON when the T1 engine is
connected to a T1 line.
This LED is green and ON when the T1 engine is
detecting frame synchronization on the drop and
insert interface receiver. The green LED is OFF when
there is a loss of frame (LOF) synchronization.
A LOF condition causes the T1 engine to transmit
unframed all ones (keep-alive) to the device attached
to the Drop and Insert Interface.
ATTN - The ATTN (Attention) indicator is amber and
ON when the CSMIM-T1 requires operator attention.
The indicator is flashing when there is a problem.
STAT - The STAT (Status) indicator is green and ON
after the CSMIM-T1 passes the core power-up
diagnostics. The indicator flashes after resetting the
CSMIM-T1.
TRAF - The TRAF (Traffic) indicator is green and
flashing when the CSMIM-T1 successfully transmits
or receives data from the LAN.
SETUP - The SETUP indicator is green when the
SETUP button is pressed ON (SETUP Mode) and
flashing when the SETUP button is pressed ON for 3
seconds (RESET Mode).
Three green LED's that indicate the Ethernet channel
that is selected by either the software or jumper
configuration.
General
5-3