User`s guide

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Configuration – Network > Interfaces > Serial
Digi routers support a variety of serial interfaces, either inbuilt or as optional add-on
modules. Each asynchronous serial (ASY) port may be configured to operate at different
speed, data format etc. These parameters may be changed using the web interface or from
the command line using AT commands and S registers.
The Configuration – Network > Interfaces > Serial menu item opens out when clicked,
to show the list of supported serial interfaces.
Note:
On models fitted with W-WAN modules, one of the interfaces (and its associated web page)
will be dedicated to the W-WAN module. The title will reflect this. Similarly, on models fitted
with an analogue MODEM, one of the interfaces will be entitled PSTN port.
Configuration – Network > Interfaces > Serial > Serial Port n
This section describes the basic configuration of a serial port.
Enable this serial interface
When this checkbox is unchecked, this is the only item that appears in the section. Clicking
the checkbox causes the various associated configuration parameters to appear.
Description
This free-form text entry box allows a description for the interface to be added. For
example, if the serial interface is connected to a card payment device, the description could
read “Till 1” or similar appropriate text.
Baud Rate
This drop-down selection box selects the required Baud rate for the associated serial port.
Data Bits / Parity
This drop-down selection box selects the required data format for the interface, 8 data bits,
no parity being a very common configuration.
Note:
When the serial port is not in 8-bit parity mode (i.e. it is in either 8-bit no parity, or 7-bit
with parity), the router will continually check for parity when receiving AT commands and
adjust and match accordingly.
Flow Control
The unit supports software flow control using XON/XOFF characters and hardware flow
control using the RS232 RTS and CTS signals. Use this drop-down list to select “Software”,
“Hardware” or a combination of “Both”. To disable flow control select the “None” option.
Enable echo on this interface
Check this checkbox to enable command echo to be enabled when using the command line
interpreter, uncheck it if the attached terminal provides local echo.
CLI result codes
Select the required level of verbosity for command result codes. The available options are;
Verbose, Numeric or None.