The British group BT - BRITISH TELECOM and Norwegian TELENOR are in talks to sever their ties in several companies. The plan provides for BT taking its stake in the German firm VIAG INTERKOM to 100% by buying the shares of its partner TELENOR. BT would also take a 100% stake in the Irish firm ESAT DIGIFONE. TELENOR, indeed, has an option enabling it to sell its 49.5% stake or exchange it for 33% in ESAT TELECOM, BT's fixed operator. Finally, the British firm would sell its 50% stake in...