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The Government of India has made the use of conditional access system (CAS) and direct-to-home (DTH) mandatory in Indian metros 1st January 2007. The implementation is taking place area wise in phases. CAS is already operational in Chennai since September 2003. CAS and DTH are platforms that can access and channelize television signals. Through CAS, the consumers can choose the channels they watch and the pay TV channels are routed through a digital set top box. The CAS has been declared mandatory in metros. DTH is the system through which the consumers get digital transmission direct-to-home. DTH substantially improves the quality of transmission.
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