User's Manual

HAYES AT COMPATIBLE COMMAND SET
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© RF Innovations Pty Ltd, 1998 Page: 60
234839, Revision 2.2
AT&K Flow Control
The &K command enables you to select the type of flow control used between your modem and
the local computer. You may want to do this to prevent possible data loss resulting from buffer
overflow.
Using flow control guarantees that data buffers in your modem and computer won’t overflow.
Your modem and your terminal or computer must be using the same type of flow control.
Command Description
AT&K0 Flow control disabled
AT&K3 RTS/CTS (hardware) flow control. The modem and computer use the CTS (Clear
to Send) and RTS (Request to Send) signals on the RS-232 serial connection to
control data flow.
AT&K4 XON/XOFF (software) flow control. The modem and computer use the XON
and XOFF characters (DC1 and DC3) to control the flow of data.
AT&V View Active Profile
The &V command allows you to view many of the modem settings. These values correspond to S
register and other commands that were saved into the modem’s non-volatile memory and used as
power up defaults.
Command Description
AT&V Display All Registers (Except I registers).
AT&V1 Display I registers - Information.
AT&V2 Display S registers only.
AT&V8 Display current links.
AT&V9 Display Fault/Diagnostics Log.
AT&W Store Active Profile
The &W command allows you to save the modem settings and submit serial communications
settings. These values will be saved into the modem’s non-volatile memory and used as power up
defaults. Not all changes require the &W command, the ones that do are outlined in the AT
command tables on page 70.
Command Description
AT&W Save general modem configuration data
AT&W1 Submit serial port configuration