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SERIES II INTELLIGENT DATA/FAX MODEMS
The $F command can be used to disable this fallback-to-Normal-due-to-
CARRIAGE-RETURN feature.
The Auto-Reliable fallback character ($F) and Auto Reliable buffering
($A) commands can be used together to cause the modem to buffer all
data received up until the CARRIAGE RETURN, and then drop to
Normal mode. All data received will then be output following the
CONNECT message.
AT$F0 = Do not fall back to Normal if CARRIAGE RETURN
received.
AT$F1 = Fall back to Normal mode if CARRIAGE RETURN
received.
The factory default is $F0.
Retransmit Count $R
If errors are received during a Reliable connection, the modem
re-sends the block of data which contained an error. With the $R0
command, if another error occurs, the block will be re-sent again. The
modem counts the number of times that a data block is re-sent. If the
same block of data is resent 12 times and still has not been received
properly, the modem assumes that the transmission line is unsuitable
for transmission, and abort the connection.
This retransmit counter is disabled by the $R1 command. When the
retransmit counter is disabled, the modem keeps trying to send data
and will not abort, no matter how many times the same block is resent.
AT$R0 = Disconnect if retransmit count is exceeded.
AT$R1 = Do not disconnect due to retransmits.
The factory default setting is $R0.