User guide

6-6 Solo E1 DSU User Guide—June 1998
6
The DATA Port RTS/CTS LEDs do not Illuminate
If the DTE device does not support the RTS or DTR signalling, set the port
DTE loss to None (defaultÑRTS) in the Data DTE ConÞguration menu.
The CTS LED should light and remain lit.
RTS and DTR are signals sent from the DTE device connected to the Data
Port.
Run a lamp test from Menu-9 Diagnostics to make sure the LEDs are
working.
The DTE Device Shows Intermittent Errors
You may have a timing error, check network statistics.
If you are timing the Solo E1 DSU from the DTE device, set the data port as
the source of the timing signal. You need a special DTE cable to enable you
to conÞgure the Solo E1 DSU as a DTE device. The cable you use depends
on your application.
If the cable and the timing are correct, place a data test set at both ends of
the E1 line in place of the DTE devices to see if the errors continue.
No LEDs Illuminate
Test the LEDs by running a lamp test from Menu-9 Diagnostics.
After Powerup, the Clock Does Not Show the Correct Time
or Date
Each time you power up, the time and date reset to a default value. You
must enter the correct time and date in the time and date Þelds in Menu-4
Main ConÞguration.