Bypass Operating Mode (Deprecated); Enter Bypass Operating Mode - Digi XBee 3 Cellular LTE-M User Manual

Modes
This indicates pppd could not open up the USB port to the modem. Make sure that the modem is
plugged in and shows up under the /dev/ directory as ppp_direct_usb.
Error after running "ping www.digi.com"
ping: unknown host www.digi.com
The name server was not setup correctly for the PPP interface. Make sure there is a valid name
server in /etc/resolv.conf.

Bypass operating mode (DEPRECATED)

WARNING! Bypass mode is now deprecated and is not recommended for new designs.
XBee 3 Cellular products support direct USB to access the cellular modem directly. See
direct mode
CAUTION! Bypass operating mode is an alternative to Transparent and API modes for
advanced users with special configuration needs. Changes made in this mode might change
or disable the device and we do not recommended it for most users.
CAUTION! The lack of hardware flow control support in the cellular component may impact
the reliability of Bypass mode. See
In Bypass mode, the device acts as a serial line replacement to the cellular component. In this mode,
the XBee Smart Modem exposes all control of the cellular component's AT port through the UART. If
you use this mode, you must setup the cellular modem directly to establish connectivity. The modem
does not automatically connect to the network.
Note The cellular component can become unresponsive in Bypass mode. See
component in Bypass mode
When Bypass mode is active, most of the XBee Smart Modem's AT commands do not work. For
example, IM (IMEI) may never return a value, and DB does not update. In this configuration, the
firmware does not test communication with the cellular component (which it does by sending AT
commands). This is useful in case you have reconfigured the cellular component in a way that makes it
incompatible with the firmware. Bypass operating mode exists for users who wish to communicate
directly with the cellular component settings and do not intend to use XBee Smart Modem software
features such as API mode.
Command mode is available while in Bypass mode; see

Enter Bypass operating mode

To configure a device for Bypass operating mode:
1. Set the AP (API Enable)
2. Send WR (Write)
3. Send FR (Force Reset)
Digi XBee® 3 Cellular LTE-M/NB-IoT Global Smart Modem User Guide
for details on how to configure your XBee to use direct USB.
Hardware flow control in Bypass mode
for help in this situation.
parameter value to 5.
to write the changes.
to reboot the device.
Bypass operating mode (DEPRECATED)
Unresponsive cellular
Enter Command mode for instructions.
USB
for details.
135