Purpose Enable the RPi 3/4 + RPi OS + pppd to make a PPPos connection to the Internet using Sierra Wireless modems RC7620 module SIMs successfully used EE (APN + PAP) Three (APN only) Things Mobile (APN only) USB and UART - guide and report Using Things Mobile SIM scripts logs WP7607 module WIP UART - guide and report scripts HL7802 module USB guide and report scripts logs HL7692 module USB guide and report scripts logs HL8548 module USB report scripts logs