With the latest and greatest 5G cellular networks right around the corner, it can be difficult to believe that it wasn’t so long ago that cell phones relied on analog networks. They aren’t ...

Case in point, the H-250 telephone handset. [Tobias] didn’t actually need a combat-ready phone handset, but loved the way it looked. Technically you can pick these up on eBay for a reasonable pr ...

A device that connects a terminal or computer to the handset of a telephone. Acoustic couplers were widely used in the days of analog telephone networks in the 1970-1990s time frame to convert the ...