GNU/Linux Debian Buster Installing oFono Phonesim – Step by step Guide
How to Install oFono Phonesim on Debian Buster 10.x GNU/Linux desktop – Step by step Tutorial.
And oFono Phonesim for Debian 10 is a Modem Emulator that oFono uses for development and testing. This allows oFono to be used by any host without requiring special GSM (or other) hardware.
Moreover, oFono is a stack for Mobile Telephony Devices on Linux. oFono supports speaking to Telephony Devices through specific Drivers, or with generic AT Commands.
Finally, this guide includes detailed instructions on Getting Started with oFono Phonesim on Debian.

1. Launching Terminal
How to QuickStart with Command Line on Debian GNU/Linux
First, Update the Apt Repo Sources with:
sudo apt update
Authenticate with the User Admin Pass.
If Got “User is Not in Sudoers file” then see: How to Enable sudo.
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