Voice over Internet
Senor Paco from my ISP came round last week, upgraded my WiMax internet bandwidth from 1 to 3 megs, stuck a VOI box in the cable between the PC and the antenna on the roof, and said "there you are, all national phone calls to landlines are now free, you have two and a half hours free calls to mobile phones a month, and cheap rate international calls."
He suggested I cancel my telephone contract and just connect my house phone system to the VOI box.
I tried this and yes, it all works. The only change in the cost of my internet service is that it's gone from monthly renewal to an 18 month contract. But no change in the price.
What I really wonder is how long the old Telecom providers can keep going when enterprising ISP's offer the same facilities for nothing ?