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&Fn Restore Factory Profile Command. This command will
restore one of the two preset factory profiles. These
profiles enable automatic line speed detection, hardware
flow control, error correction, and data compression.
You can also define and store your own specialized
profiles. See the &Wn, &Yn, and Zn commands for details.
&Gn Guard Tone Setting. This command sets the guard tone for
V.22 and V.22bis connections. (See S23.)
&G0 No guard tone.
&G1 No guard tone.
&G2 1800 Hz guard tone. Used in the U.K. and some
other Commonwealth countries.
&Jn Telephone Jack Setting. The &J0 and &J1 commands are
included for compatibility only and perform no function
other than to return an OK message.
&Kn Flow Control Setting. If your communications software
does not support hardware flow control, you will need to
specify &K0 or &K4 (see below). (See S39.)
&K0 Disable flow control.
&K3 Enable hardware flow control only.
&K4 Enable software flow control only.
&K5 Enable transparent software flow control.
&K6 Enable both hardware and software flow control.
&L
Leased Line Setting. The &L0 command is included for
compatibility only and performs no function other than to
return an OK message. This modem does not support
leased line operation.
&M Selects a direct connection. This command is equivalent to
&Q0.
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