So I live out in the middle of country-side #Texas in a #TinyHouse I built on a big plot of land my family owns. My parents have a house on the same plot of land, but being Texas, it's actually a short drive to their house. They are old and like to check in but misplace their #cellphones a lot, and hate making the actual trip over. So I decided to build them a custom #telephone #network using a #PBX between our houses, running the wiring underground. Which means using old #landline #phones.