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User’s Manual C-7
AT Commands
&D2 If the DTR signal is not detected while in on-line data mode,
the modem disconnects (default).
&D3 Reset on the on-to-off DTR transition.
Result Codes:
OK n=0,1,2,3
ERROR Otherwise
&F Load factory settings
This command loads the configuration stored and programmed at the
factory. This operation replaces all of the command options and the S-
register settings in the active configuration with factory values.
&F Recall factory setting as active configuration.
&Gn V.22bis guard tone control
This command determines which guard tone, if any, to transmit while
transmitting in the high band (answer mode). This command is only used in
V.22 and V.22bis mode. This option is not used in North America and is for
international use only.
&G0 Guard tone disabled (default).
&G1 Sets guard tone to 550 Hz.
&G2 Sets guard tone to 1800 Hz.
Result Codes:
OK n=0,1,2
ERROR Otherwise
&Kn Local flow control selection
&K0 Disable flow control.
&K3 Enable CTS/RTS flow control (default).
&K4 Enable XON/XOFF flow control.
Result Codes:
OK n=0,3,4
ERROR Otherwise
&Pn Select Pulse Dial Make/Break Ratio (WW)
&P0 Selects 39% - 61% make/break ratio at 10 pulses per
second.
&P1 Selects 33% - 67% make/break ratio at 10 pulses per
second.
&P2 Selects 33% - 67% make/break ratio at 20 pulses per
second.
Result Codes:
OK n=0,1,2
ERROR Otherwise