Lantronix 900-422 - Manual (Page 58)

8: Setup Mode: Channel Configuration
XPress DR+ User Guide 58
When an active connection is in effect, the unit terminates the connection if it receives the
following sequence from the attached serial device:
‹ 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.
If this sequence is not followed, the unit remains in data transfer mode.
Table 8-7. Modem Mode Commands
Modem Mode
Command Function
ATDTx.x.x.x,pppp or
ATDTx.x.x.x/pppp Makes a connection to an IP address (x.x.x.x) and a remote port
number (pppp).
ATDTx.x.x.x
Makes a connection to an IP address (x.x.x.x) and the remote port
number defined within the unit.
ATD0.0.0.0
Forces the unit into Monitor Mode if a remote IP address and port
number are defined within the unit.
ATD
Forces the unit into Monitor Mode if a remote IP address and port
number are not defined within the unit.
ATDx.x.x.x
Makes a connection to an IP address (x.x.x.x) and the remote port
number defined within the unit.
ATH Hangs up the connection (entered as +++ATH ).
ATS0=n
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.
ATEn
Enables or disables character echo and responses.
n=0 disables character echo and responses.
n=1 enables character echo and responses.
ATVn
Enables numeric response or full verbose.
n=0 enables numeric response.
n=1 enables full verbose.
Note: The unit recognizes these AT commands as single commands such as
ATE0 or ATV1; it does not recognize compound commands such as ATE0V.