Total Control MP/16, Руководство оператора

Страница: 101 / 182

Leased Line 4-23
Modem Setup
If a Total Control MP/16 modem is set to &L1, as described in
what follows, and the remote AT-compatible modem has a
comparable setting, they auto matically connect when they are
powered on. They also reconnect, without any operator inter -
vention, if a disturbance on the line is severe enough to break the
connection.
Set the modem as follows:
1
Set your terminal or communications software to the rate at
which you want the modems to communicate. For example,
use a terminal/software setting of 19.2K bps and, if both
modems have the capability, they will connect at 14.4K bps.
The following instructions assume that you are familiar with
the guidelines on using the &B and &H (Appendix C) and the
&W command (Appendix C).
2 Send the modem the following command:
AT &B1 &S2 &H1 &L1 S56.6=1 &W
&B1 Fixes the modem's computer interface rate at the same
serial port rate you selected when setting up your
communications software.
&S2 Causes the modem to send a Clear to Send (CTS) signal
only after it sends the Carrier Detect (CD) signal, that
is, only after it connects with the remote modem.
&H1 Enables hardware (CTS) flow control.
NOTE:
If your software or machine does not support Clear to
Send (CTS) or hardware flow control, don't include &S2 and
&H1 in the command string.
&L1 Forces the modems off hook at power on and enables
them to re-establish the connection should it be broken.
S56.6=1 Disables V.34. V.34 must be disabled for proper leased
line functionality.
&W Writes the settings to nonvolatile memory (NVRAM)
as power-on defaults.