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RASFinder RF300E/RF310E User Guide
RF300E/RF310E
174
%Cn Data Compression
n = 0 or 1
Default: %C1
The %C command allows you to disable data compression. Data compression is normally enabled.
%C0 disables V.42bis/MNP 5 data compression.
%C1 enables V.42bis/MNP 5 data compression.
Immediate Action Commands
Use immediate action commands to obtain information about AT commands and current modem
settings.
A/ Repeat Last Command
Default: None
Type A/ to repeat the previous command. Do not precede this command with AT or press ENTER to
execute it.
In Information Request
n = 0
Default: none
This command displays specific product information about your modem.
I0 or I returns the controller firmware version number. Use this command to identify your modem’s
firmware level before calling Multi-Tech Technical Support. (Same as I3.)
&Bn Dummy command
&V View Current Configuration
Default: none
Use the &V command to display the active modem settings.
Flow Control Commands
Flow control refers to techniques used by data terminal equipment and the modem to pause and
resume the flow of information between them. It prevents a device from accepting more data than it
can handle. The modem implements flow control in both directions. When the modem halts the flow
of data, it is called flow control. When the computer halts the flow, it is called pacing.
&Kn Local Flow Control Selection
n = 0, 3, or 4
Default: &K3
Allows you disable flow control and enable hardware or software flow control.
&K0 completely disables data flow control initiated by the modem. (Same as \Q0.)
&K3 enables modem’s use of 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.)