Filter
Top Products
Monitoring the Unit
4-10
7975-A2-GB20-40
December 1998
7975 Standalone Termination Unit LEDs
The following table contains a description of the LEDs on the 7975 Standalone
Termination Unit front panel.
POWER
ALARM
TEST
DSL
DTE
98-15856
7975 M/SDSL
TM
TM
Type LED LED is . . . Indicating . . .
SYSTEM
POWER Green
Off
Flashing
Unit has power.
No power to the Unit.
Unit is in minimum mode and a download is
required.
ALARM Red
Off
Device failure, or Power-On Self-Test (POST)
is not complete.
Self test passed.
TEST Yellow
Yellow,
flashing
Off
Loopback test or 511 test pattern in progress.
Self test in progress.
No tests.
DSL DSL Green
Amber
Amber,
flashing
Off
DSL link is up.
DSL training in progress.
An OOF condition exists.
The DSL Link is down.
SYNC Port DTE Green
Amber
Amber,
flashing
Interchange circuits for the port are in the
correct state to transmit and receive data.
The port is configured to monitor DTR and/or
RTS and no monitored lead is asserted.
The Data Channel or Data Terminal loopback
is active.