User ManualC-Series User Manual Use this manual to set up, connect, test, and operate your C-Series modem system. Start HereGetting StartedRefer to the Getting Started section for the following procedures to get started with your Popoto Modem system: Connecting the modem Preparing an air-test environment Connecting the modems using RS-422 and running the application Opening a PShell session via telnet Verifying communication Sending test commands .