Epson ESC/VP21 User Manual page 21

Set Guard Tone
&Gn
&G0
&G1
&G2
Auxiliary Relay Control
&Jn
This command is only included for compatibility and performs no function except
to load the S-register.
&J0
&J1
&Pn Select Pulse Dialing Make/Break Ratio
&P0
&P1
&Sn DSR Option
This command controls how the modem treats the DSR signal.
&S0
&S1
2 - COMMAND REFERENCE
Guard tone disabled. (default)
550 Hz guard tone enabled.
1800 Hz guard tone enabled.
&J0 command. (default)
&J1 command.
Sets a 39/61 make/break ratio at 10 pps. (default)
Sets a 33/67 make/break ratio at 10 pps.
DSR circuit always on. (default)
DSR circuit is on during handshaking, off
in test or idle modes. DSR is on when carrier
is lost.
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