I see those companies crying out loud as users begin to use Java-Programmable handies (=mobile phones in germany) and just bypass any costs.

Just think about it:

They can't charge you, because you never contact their central servers /station.

Horrible for them, great for you, as long as the phones manage to to find any other phone in calling range. Maybe they would need to do what they do all the time, only on another frequency or so: Sending pulses every minute(or second, but that gets you _much_ electrosmog), stating, that they are there. Everyone, who gets the impulses would have the "ip" (=encryption) of that handy. then you'd assign a signature to each handy, which is tied to the users you know.

When you want to call someone your phone send out the query for the signature, which just gets forwarded, but I can see the phone-industry sending searches for meaningless signatures in huge numbers and using full radio stations to stop that technology.

They will fight against you with all they have, if necessary with nails and teeth.