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MT5634HD8/16 User Guide
The &M command enables asynchronous communications mode. This is the default.
&Kn
Local Flow Control Selection
n = 0, 3, or 4
Default: &K3
The &K command allows you disable flow control, and enable hardware or software flow control.
&K0 completely disables data flow control initiated by the modem. (This is the same as \Q0.)
&K3 enables the modem's use of the Clear to Send (CTS) signal on the RS-232/V.24 interface to regulate
data flow. When CTS drops, data flow is suspended until the signal goes "high" (on) again. This method of
flow control works in conjunction with pacing (i.e., computer-initiated flow control), which uses the
Request to Send (RTS) signal on the RS-232/V.24 interface. Hardware flow control cannot be enabled
unless an active error correction protocol is selected. This is the factory default setting. (This is the same as
\Q3.)
&K4 enables XON/XOFF software flow control. XON/XOFF flow control is an in-band method of data flow
regulation. In-band data regulation means that the XON (^Q) and XOFF (^S) characters are inserted into
the stream of data rather than using separate control lines. When an XOFF character is detected, the data
stream is suspended until an XON character is detected. If you issue the &K4 command to the modem, it
will respond to XON/XOFF pacing, and use XON/XOFF characters as its own method of flow control to the
computer. (This is the same as \Q1.)
The drawback to using this method of pacing is that some files may contain these characters as part of the
file data. If such a file is transferred using a modem with XON/XOFF flow control enabled, the file transfer
could fail due to indefinite suspension.
\Qn
Local Flow Control Selection
n = 0, 1, or 3
Default: \Q3
The \Q command allows you disable flow control, and enable hardware or software flow control.
\Q0 completely disables data flow control initiated by the modem. (This is the same as &K0.)
\Q1 enables XON/XOFF software flow control. XON/XOFF flow control is an in-band method of data flow
regulation. In-band data regulation means that the XON (^Q) and XOFF (^S) characters are inserted into
the stream of data rather than using separate control lines. When an XOFF character is detected, the data
stream is suspended until an XON character is detected. If you issue the &K4 command to the modem, it
will respond to XON/XOFF pacing, and use XON/XOFF characters as its own method of flow control to the
computer. (This is the same as &K4.)
The drawback to using this method of pacing is that some files may contain these characters as part of the
file data. If such a file is transferred using a modem with XON/XOFF flow control enabled, the file transfer
could fail due to indefinite suspension.
\Q3 enables the modem's use of the Clear to Send (CTS) signal on the RS-232/V.24 interface to regulate
data flow. When CTS drops, data flow is suspended until the signal goes "high" (on) again. This method of
flow control works in conjunction with pacing (i.e., computer-initiated flow control), which uses the
Request to Send (RTS) signal on the RS-232/V.24 interface. Hardware flow control cannot be enabled
unless an active error correction protocol is selected. This is the factory default setting. (This is the same as
&K3.)
\Xn
XON/XOFF Pass-Through
n = 0
Default: \X0
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CommPlete Communications Server
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