[coldphoenix]

Not too sure, but I think US gave that intel abt the conversations.. The US had given some info to the Indians on the incident but I'm not really certain if that included the conversations as well

[cold start]

Those conversations were caught because the Intelligence Bureau (IB) which is India’s domestic intelligence agency (RAW is the counterpart of the CIA)tapped the cell phones of the attackers. It is said that they fed the SIM cards to the Lashkar-e-taiba through a courier. However that might just be a smokescreen because they are known to have an extensive domestic tapping capability which they don’t necessarily want to reveal.