ESPRIT Statmux, Руководство пользователя

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Esprit Statmux User Manual December 1997 Issue 1.3 Page 17 of 36
4 TROUBLESHOOTING
4.1 Front Panel LEDs
On the front panel only the CARRIER light should be illuminated during normal use.
When the multiplexer is
IDLE the CARRIER LED
will flash slowly. A faster
flash shows that a call
attempt is being made on
a dial up modem.
LED LABEL CONDITION NOTES
CARRIER Slow Flash IDLE
Fast Flash Call established,
searching for
synchronisation.
Steady Green Call in progress -
passing data OK
LOOP Not illuminated Normal un-looped mode
Green Some Channels looped
or in QBF test modes.
ERROR Red Red if an ERROR has
Not illuminated Unlit if link passing data
occurred on the
composite link.
correctly.
4.2 Diagnostics & Loopbacks
A number of debug options are available. They are described in the table in section
2.10, on page 11. It is possible loop back any channel, as well as sending continuous
Quick Brown Fox messages either locally and remotely, to allow data and flow control