FMUX/S-4E1-E2 Multiplexer
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Copyright © 2007 Cronyx
15
Section 3. Operations
3.1. Indicators
The front panel contains indicators, showing the status of the device. The list of indicators
and their functions are specified in the table below. Reference number on the figure
correspond to numbers in the table.
LERR LOS
RERR LOW
TST
PWR
0 1 2 3
SNMP
7
8
10
9
1
2
4
3
CONSOLE
ALARM
TX
RX
5
6
No. Indicator
State
Description
1
LERR
Red
Errors on the link:
• lights or flashes during a high error rate in the
link input signal;
• lights when receiving a test pattern from the
link with loop enabled on the link;
• lights or flashes when there are BER tester
errors in the link test mode (the TST indicator
lights).
2
LOS
Red
Lights at the link receiver carrier loss.
3
PORT LOS
Red
E1 port errors:
• flashes during HDB3 coding errors in the corre-
sponding E1 port;
• lights during loss of carrier in the corresponding
E1 port;
• lights when receiving the AIS signal at the input
of the corresponding E1 port.
