Western Telematic SRM-100 - Manual (Page 45)

Command Function/Options
&Dn Control Data Terminal Ready (DTR) Signal. Interprets the ON to
OFF transition of the DTR signal from the DTE as specified by
the &Qn setting.
&D0 &Q0,5,6: DTR ignored.
&Q1,4: Modem hangs up; auto answer not effected.
&Q2,3: Modem hangs up; auto answer inhibited
&D1 &Q0,1,4-6: Asynchronous escape sequence.
&Q2,3: Modem hangs up; auto answer inhibited.
* &D2 &Q0-6: Modem hangs up; auto answer inhibited.
&D3 &Q0,1,4-6: Modem performs soft reset as if the ATZ command
were received.
&Q2,3: Modem hangs up; auto answer inhibited.
&Fn Load Factory Defaults. Instructs the modem to load the factory set parameters
(non-programmable).
&F0 Load factory defaults 0.
&F1 Load factory defaults 1.
&Gn Select Guard Tone.
* &G0 Disable guard tone.
&G1 Disable guard tone.
&G2 Select 1800 Hz guard tone.
&Jn Telephone Jack Control.
* &J0 No Function. Included for compatibility.
&J1 No Function. Included for compatibility.
&Kn DTE/Modem Flow Control.
&K0 Disable flow control.
* &K3 Enable RTS/CTS.
&K4 Enable XON/XOFF.
&K5 Enable transparent XON/XOFF.
&K6 Enable both RTS/CTS and XON/XOFF
&Pn Select Pulse Dial Make/Break Ratio.
* &P0 USA/Canada ratio (39/61 at 10 pps).
&P1 UK/Hong Kong ratio (33/67 at 10 pps).
&P2 Same as &P0, except at 20 pps.
&P3 Same as &P1, except at 20 pps.
&Qn Asynchronous Mode
&Q0 Direct Asynchronous Mode. All Error Correction and
Compression protocols are disabled. This requires that the
software’s baud rate matches modem baud rate.
* &Q5 Modem negotiates an error correction link.
&Q6 Selects asynchronous operation in normal mode.
(Speed buffering allows software baud rate to be fixed).
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SRM-100 - Secure Rack Modem, User's Guide Modem Command Set (AT Commands)