In our article few days ago where we talked about Loops and Trunks & Circuit switching,  we finished our article on discussing concepts for CO, and how it were made since the most humble beginnin

We’ll start this series of articles with a basic model of PSTN - PSTN stands for (Public Switched Telephone Network) and build on it in subsequent posts. In figure below, a

If you need send a 30 POTS - FXS/FXO lines on large distances, to connect a phones in remote areas, where no PABX's or S12 are located - this is where AN-FM-PCM30 shows up as ideal solution, and this