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Setting up the configuration environment
Set up a configuration environment as shown in
1.
Connect the serial port of the PC to a modem and the console port of the device to a modem.
2.
Connect each modem to the PSTN through a telephone cable.
3.
Obtain the telephone number of the modem connected to the device.
Figure 15 Connecting the PC to the device through modems
4.
Perform the following configurations on the modem directly connected to the device:
AT&F—Restores the factory default.
ATS0=1—Configures auto-answer on first ring.
AT&D—Ignores data Terminal Ready signals.
AT&K0—Disables local flow control.
AT&R1—Ignores Data Flow Control signals.
AT&S0—Forces DSR to remain on.
ATEQ1&W—Disables the modem from returning command responses and execution
results.
To verify your configuration, enter AT&V to display the configuration results.
NOTE:
The configuration commands and output vary by modem. For more information, see the modem
user guide.
5.
To avoid data loss, verify that the speed of the console port is lower than the transmission rate
of the modem, and the default parity check, stop bits, and data bits settings are used.
6.
Launch the terminal emulation program and create a connection by using the telephone
number of the modem connected to the device.
Figure 16
to
Figure 18
shows the configuration procedure in Windows XP HyperTerminal.
Figure
15:
41
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