Windows Marketplace V.90 - Manual (Page 38)

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&Kn Local Flow Control Selection
&K0: Disable flow control.
&K1: Reserved.
&K2: Reserved.
&K3: Enable RTS/CTS flow control (default).
&K4: Enable XON/XOFF flow control.
Result Codes:
OK n = 0, 3, 4
ERROR Otherwise
&Mn Asynchronous Communications Mode
&M0: Asynchronous mode (default).
&M1: Reserved.
&M2: Reserved.
&M3: Reserved.
&M4: Reserved.
Result Codes:
OK n = 0
ERROR Otherwise
&Pn Pulse Dial Make-to-Break Ratio Selection
This Command is effective only for Japan.
&P0 39/61 make/break ratio, 10PPS
&PI 33/67 make/break ratio, 10PPS (default)
&P2 33/67 make/break ratio, 20PPS
Result Codes:
OK n = 0, 1, 2
ERROR Otherwise
&Qn Asynchronous Communications Mode
&Q0: Asynchronous Mode, buffered. Same as \N0.
&Q1: Reserved.
&Q2: Reserved.