Black Box MD1276A, User Manual

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Page 172
AT\Q Extended Flow Control
The \Q command enables you to select flow control (handshaking) between your modem and
computer. While performing the same function as the &K command, the \Q command provides
compatibility with Microcom modems.
Flow control is only available when the modem is configured for constant speed mode or reliable
or auto-reliable modes, and is operating in on-line state.
Flow control will be ignored when your modem is configured for variable speed mode or is in
local command state.
Options
AT\Q0 Flow control disabled
AT\Q1 XON/XOFF flow control
The modem and computer use the XON and XOFF characters (DC1 and
DC3) to pause the flow of data.
AT\Q2 CTS flow control #1
The modem uses the CTS (Clear To Send) signal to pause data flow, but will
not respond if the computer changes the state of the RTS (Request To Send)
signal.
AT\Q3 CTS/RTS flow control #1
The modem and computer use the CTS and RTS signals to control data flow
(as per &K3).
AT\Q4 Modem XON/XOFF flow control
The modem uses the XON and XOFF characters (DC1 and DC3) to pause
the flow of data but will notrespond if the computer sends XON or XOFF
characters.
AT\Q5 CTS flow control #2
The modem uses the CTS (Clear To Send) signal to pause data flow and
keeps CTS low until a connection is established with a remote modem. The
modem will not respond if the computer changes the state of the RTS
(Request To Send) signal.
AT\Q6 CTS/RTS flow control #2
The modem and computer use the CTS and RTS signals to control data flow.
CTS remains low until a connection is established with a remote modem.
See Also
&K command Flow Control
Range
0-6