Moxa KM-2430-T — подключение к PPP серверу через модем: пошаговая инструкция [35/52]

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ioPAC RTU Software RTU Communications

4-10

Example 1: Connecting to a PPP server over a simple dial-up connection

The following command is used to connect to a PPP server by modem. Use this command for old ppp servers

that prompt for a login name (replace username with the correct name) and password (replace password with

the correct password). Note that debug and default route 192.1.1.17 are optional.

#pppd connect ‘chat -v “ “ ATDT5551212 CONNECT “ “ ogin: username word: password’

/dev/ttyM0 115200 debug crtscts modem defaultroute

If the PPP server does not prompt for the username and password, the command should be entered as follows.

Replace username with the correct username and replace password with the correct password.

#pppd connect ‘chat -v “ “ ATDT5551212 CONNECT “ “‘user username password password

/dev/ttyM0 115200 crtscts modem

The pppd options are described below:

connect ‘chat etc...’

This option gives the command to contact the PPP server. The ‘chat’ program is used to dial a remote computer.

The entire command is enclosed in single quotes because pppd expects a one-word argument for the ‘connect’

option. The options for ‘chat’ are given below:

-v

verbose mode; log what we do to syslog

“ “

Double quotes—don’t wait for a prompt, but instead do ... (note that you must include a space after the second

quotation mark)

ATDT5551212

Dial the modem, and then ...

CONNECT

Wait for an answer.

“ “

Send a return (null text followed by the usual return)

/dev/

Specify the callout serial port.

115200

The baudrate.

debug

Log status in syslog.

crtscts

Use hardware flow control between computer and modem (at 115200 this is a must).

modem

Indicates that this is a modem device; pppd will hang up the phone before and after making the call.

defaultroute