The quality of my VoIP phone calls suffered whenever I was downloading or uploading anything. This was irritating, especially for those calling me (I heard them better than they heard me). So I poked at Iproute2 and other howtos, especially with regard to VoIP traffic, but I couldn't find anything that worked well. After some playing around, I've found settings that were right for me: consistant VoIP quality, regardless of any activities on the wire.

In this howto I will show you step-by-step how to successfully set up a long distance calls service in your Cybercafé, using open source software. The main element is *starShop-OSS, an open source application designed to monitor and bill, in real time, calls made via Asterisk PBX. This service is commonly called callshop or taxiphone.