The following connection types are supported by the SARA-R4:

1. AT interface

LPWA - App Minicom for serial communication

2. Qualcomm MSM Interface

Recommended

LPWA - Network connections with Network Manager (plus ModemManager and libqmi)LPWA - Remote Network connections with libqmi

3. Point-to-Point Protocol

Not recommended as it requires dynamic configuration of the tty device due to the USB enumeration order not being guaranteed, as well as configuration of chat scripts. It also does not allow concurrent AT commands and network support.

LPWA - Dial-up network connections with WvDial