USB FXS dongle
Description
March 29, 2012
For a classroom project, my project partner and me set up a telephone system through VoIP. But instead of using VoIP telephones, we used old analogue ones, interfaced through a custom USB adapter and Asterisk.
This USB adapter is a so-called FXS (or ATA) adapter, which acts like it is a regular landline for a connected analogue telephone.