Lantronix DeviceLinx XPort Direct User Manual page 33

If this sequence is not followed, the unit remains in data transfer mode.
Modem Mode
Command
ATDTx.x.x.x,pppp or
ATDTx.x.x.x/pppp
ATDTx.x.x.x:pppp
ATDTx.x.x.x
ATD0.0.0.0
ATD
ATDx.x.x.x
ATH
ATS0=n
ATEn
ATVn
Note: The unit recognizes these AT commands as single commands such as
ATE0 or ATV1; it does not recognize compound commands such as ATE0V.
DeviceLinx™ XPort Direct/XChip Direct SoC User Guide
No serial data is received for one second.
The character sequence +++ is received, with no more than one second
between each two characters.
No serial data is received for one second after the last + character. At this
time, the unit responds affirmatively per the selected echo/response mode.
The character string ATH is received, terminated with a carriage return. The
unit responds affirmatively according to the selected echo/response mode
and drops the network connection. The serial interface reverts to accepting
command strings.
6-6. Modem Mode Commands
Function
Makes a connection to an IP address (x.x.x.x) and a remote port
number (pppp).
Makes a connection to an IP address (x.x.x.x) and the remote port
number defined within the unit.
Forces the unit into Monitor Mode if a remote IP address and port
number are defined within the unit.
Forces the unit into Monitor Mode if a remote IP address and port
number are not defined within the unit.
Makes a connection to an IP address (x.x.x.x) and the remote port
number defined within the unit.
Hangs up the connection (entered as +++ATH).
Enables or disables connections from the network going to the serial
port.
n=0 disables the ability to make a connection from the network to
the serial port.
n=1-9 enables the ability to make a connection from the network to
the serial port.
n>1-9 is invalid.
Enables or disables character echo and responses.
n=0 disables character echo and responses.
n=1 enables character echo and responses.
Enables numeric response or full verbose.
n=0 enables numeric response.
n=1 enables full verbose.
6: Setup Mode: Channel Configuration
33