Kentrox DataSMART T3/E3 IDSU, Руководство по установке, Страница: 42 / 52

42 Chapter 5: Initial configuration
Table 2—LED indicators and their meanings
LED Indicator Condition
POWER/FAIL Green Power is on, self-test successful.
Red Power is on, self-test failed.
Off No power is being received.
LOOP / FEL Yellow Internal loopback is set.
Yellow, flashing Remote loopback is set and verified.
SEND Yellow Remote loopback set code is
being transmitted.
Yellow, flashing Remote loopback may be set but
not verified.
ALARM Red Alarm exists at the network interface.
Green ACO switch has been activated, but
alarm still exists at the
network interface.
Off No alarm.
RCV
XMT
FEI
NEI Off Not used; always off.
TxD Yellow Data is being transmitted by DTE,
received by IDSU. (Indicates SD
activity for HSSI port, transmit data
activity for V.35 port.)
Off No transmit data.
RxD Yellow Data is being received at DTE,
transmitted by IDSU. (Indicates RD
activity for HSSI port, receive data
activity for V.35 port.)
Off No receive data flow.
CA Yellow Indicates IDSU is ready to send and
receive data. (Indicates the state of
CA for HSSI port, and state of CTS
& DCD in V.35 mode.)
Off IDSU not ready.
TA Yellow Indicates DTE is ready to send and
receive data. (Indicates the state of
TA for HSSI port, and DTR for
V.35 port.)
Off DTE not ready.