Traditional private telephone exchanges (PBX) are essential for businesses but come at a premium. Even a simple system can cost thousands to implement. Yet, with the help of Voice over Internet Protocol (VoIP) and the popular open-source telecoms platform Asterisk, the humble Raspberry Pi can match the features of the most expensive PBX systems. Small businesses can get up and running with a two-phone PBX including all the cool features for under £100. At home, why not have phones for your study or kitchen? Leave a voicemail for the dog!
This article first appeared in The MagPi 78 and was written by PJ Evans
You’ll need
2 VoIP devices (like the Cisco SPA504G)
RasPBX Image
Wired Ethernet and switch
iOS/Android device (optional)
Step 01 Choose your device
One of the great things about VoIP phone systems is the flexibility. You’re not constricted to a traditional phone. There are three main options. We’re using the popular Linksys SPA941 and … // Read more: original article.