BT to introduce roaming phones

That will operate over a mobile network and over a bluetooth wireless connection to facilitate changing between being charged mobile network level tariffs and fixed line costs. An idea similar to this has caused outrage in the Indian telecoms industry recently - a company had wanted to introduce a phone that would jump across cordless landline cells to be used like mobile phone but doing us by using hundreds of cordless phone base stations in normal people's houses. Obviously this isn't the same thing yet - I assume that BT would tie the user down to using one fixed line connection, but perhaps it could be extended?

link to story from The Register