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Conditional-Access-System CAS Area Settop-box Pay & Free Channels Subscription Other Info Cable TV
  Conditional Access System or Digital Addressable Cable TV Systems

Conditional Access System (CAS) or Addressable System is a word normally used for a set of hardware devices and connected software, that also includes a set top box, used at different stages of distribution of a TV channel through which normally the pay channels and free to air channels are transmitted in encrypted form.

The service subscriber (Cable TV or DTH) is given an authorization depending upon his request to view one or more of such encrypted pay channels of his choice. The subscriber will only be able to view those channels which he has paid for. The authorization is given and controlled by the Multi System Operator (MSO) who owns the Conditional Access System in a Cable Television Network like Hathway Cable, InCabli, SitiCable or a DTH Service provider like Tata Sky, Airtel Digital TV, Videocon d2h, Sun Direct, Dish TV or Reliance Digital TV.

The words “Conditional Access System” and “Addressable System” are quite often used interchangeably. “Addressable system” signifies that a subscriber is identifiable. The Multi System Operator and the broadcaster will know the exact number of subscribers of a pay channel or a bouquet of pay channels and the amount that is due from that subscriber.

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