ADTRAN 1204006L1 Instrukcja Użytkownika Strona 46

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Chapter 3. Menu Navigation
3-10 Express 5210 User Manual 61200208L1-1
LED Descriptions
The Express 5210 front panel has seven LED indicators: TD, RD,
ETH, TDN, RDN, ALM, and TST. These LEDs are identified as
follows:
Possible Alarm Conditions
DDS Alarm Conditions
Open loop on network
No frame synchronization
OOS/OOF
Frame Relay Alarm Condition
Network frame relay signaling state down
LED This LED is active when...
TD
the
DTE port is transmitting data.
RD
the
DTE port is receiving data.
ETH
the
10BaseT LAN port is transmitting or receiving data.
TDN
the network port is transmitting data.
RDN
the network port is receiving data.
ALM
an alarm condition exists. Alarm conditions are
described in the section following this table.
TST
the unit is in network test mode initiated from the service
provider or from the remote end of a point-to-point DDS
circuit.
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