Mobitus

This service provider sells a VoIP-PSTN gateway service. It allows users with their software and a headphone to make voice calls between Mobitus users or between a Mobitus and PSTN user worldwide. You must buy a subscription with them and you will get call charges for making calls through the gateway.

It is unclear why this is a paid service as also many free services are available. I wonder whether anyone is working on the inter-working between all these VoIP-clients and -services.

[inspiration Techdirt and WiFi Planet]