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Condition 4 -
Transmission of the Abort Character
The abort character disconnect feature enables you to disconnect an on-I ine DC-2212
without having to remember about long spaces or shouting into the telephone
.
The abort
character can be used in the following manner:
If you transmit
(and
type)
the
abort character and do not
transmit
any other
character
for
three
seconds,
the modem
will disconnect
from
the
telephone
lines.
The abort character can be turned off by typing any key within that three-second
period. The I command parameters are set up to allow you to disable the abort
character disconnect feature.
The abort character (when sent) uses long space disconnect signaling to tell the other
end of the line that your modem is about to shut down
.
This long space signaling is
only true if you have not disabled transmission of long space with the I command
parameters.
Analog Self-Test Mode
If you exit the command receptive state and the DC-2212 goes into the self-test mode
(the
Q
command is active) you are considered to be in an on-line mode. Of course, you
are not connected to the telephone lines
,
but you can exit the mode using the abort
character disconnect sequence or by dropping (disasserting) DTR.
21
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