Lantronix EDS32PR, Руководство пользователя

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14: Tunneling
EDS User Guide
139
Trailing Character: If a trailing character is defined, this character is
appended to data put on the network immediately following the send
character.
Modem Emulation
The EDS supports Modem Emulation mode for devices that send out modem signals.
There are two different modes supported:
Command Mode: sends back verbal response codes.
Data Mode: information transferred in is also transferred out.
You can change the default settings for verbose response codes, echo commands,
and quiet mode, by using Command Mode commands. The current settings can be
overridden; however on reboot, it will go back to the programmed settings.
Configure the connect string as necessary. The connect string appends to
the communication packet when the modem connects to a remote location.
You can append additional text to the connect message.
Command Mode
The Modem Emulation Command Mode supports the standard AT command set. For
a list of available commands from the serial or Telnet login, enter AT?. Use ATDT,
ATD, and ATDP to establish a connection:
All of these commands simulate a modem.
For commands that are valid but not applicable to the EDS, an “OK” message is sent,
but the command is silently ignored.
The EDS attempts to make a Command Mode connection as per the IP/DNS/port
numbers defined in Connect Mode. It is possible to override the remote address, as
well as the remote port number.
By default, the +++ characters are not passed through the connection. Turn on this
capability using the modem echo pluses configurable.
Command
Description
+++ Switches to Command Mode if entered from serial port during
connection.
AT? Help.
ATDT
<Address
Info> Establishes the TCP connection to socket (<IP>:<port>).
ATDP
<Address
Info> See ATDT.
ATD Like ATDT. Dials default Connect Mode remote address and
port.
ATD
<Address Info> Sets up a TCP connection. A value of 0 begins a command
line interface session.
ATO Switches to data mode if connection still exists. Vice versa to