FMUX/S-4E1-E2 Multiplexer
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Copyright © 2007 Cronyx
18
3.3. Device responses to emergencies
Local device
Remote device
Condition
Indicators
and relay
AIS Output
to E1 Ports
Indicators
and Relay
AIS Output
to E1 Ports
Power failure
All indicators: Off
Relay: Alarm
LOS: On
Relay: Alarm
To all ports
Loss of input signal from
link
LOS: On
Relay: Alarm
To all ports RERR: On
High link input signal error
rate
LERR: On
Relay: Alarm
To all ports RERR: On
E1 port N configured as
«Unused»
PORT N STATE: Off
Loss of E1 port N input
signal (port is «In use»)
PORT N LOS: On
Relay: Alarm
To port N
Loss of E1 port N input
signal (port is «Unused»)
PORT N STATE: Off
To port N
AIS is being received at the
E1 port N
To port N
Local link loopback is
enabled
TST: flashes
To all ports
Remote link loopback is
enabled
TST: flashing by
double flashes
TST: flashes
To all ports
E1 port N loopback is
enabled
PORT N STATE:
flashes
To port N
E1 port N tributary
loopback is enabled
PORT N STATE:
flashing by double
flashes
To port N