Toronto-based telecom equipment vendor Nortel Networks is reportedly considering a takeover bid for US-based telecom equipment maker, Tellabs, Inc., at a price of $14-$15 per share, valuing Tellabs at $7.4 billion. According to sources, Nortel’s current market capitalisation is about $7.6 billion. Other companies that have shown interest in Tellabs include NokiaSiemens and Ericsson.