According to the consulting firm’s team, a variety of wireless experts using the Raspberry Pi, a radio interface, and a couple pieces of open source software create the mobile basestation. As you can see in the video, the team uses two cell phones and successfully has them communicate with each other.
The system is run using three applications: OpenBTS, FreeSWITCH, and a script for assigning telephone numbers. OpenBTS is used for providing the GSM standard, while FreeSWITCH is used to route calls in a similar way to Skype,â the consulting firm explains. Condescending a 30-foot tower into a 3-inch Raspberry Pi is perhaps the epitome of demonstrating low-cost solutions for the future.