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DEFINITY Communications System
CHAPTER 5: TROUBLESHOOTING
7400B Data Module
User’s Guide
Page 5-5
Symptom
Problem Solution
The AA LED flashes but
The automatic answer
the data module does not
option is not enabled;
automatically answer the
when there is no incoming
incoming call. call, the AA LED is off.
The automatic answer
option is enabled; the AA
LED is on when there is
no incoming call, but the
terminal device is not
ready (TR LED is off).
at&d0
[ Enter ]
The automatic answer
option is enabled; the AA
and TR LEDs are lit, but
the POWER/TEST lamp is
flashing, indicating that
the data module is in a
local loopback test mode.
From the command mode, type
ats0=1
[ Enter ]
to turn on the automatic answer
feature. Set the value following
the equal sign (1 in the example) to
the ring number on which you want
the data module to answer an
incoming call. The automatic
answer feature is turned off by
setting this value to 0.
If the local terminal is a PC,
configure the communications
software to turn on the DTR lead,
or set the data module to ignore the
DTR lead by typing
Terminate the local loopback test
by typing
at&t0
[ Enter ]