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In page Big Brother (franchise):

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The fourth Argentine series added a telephone in the living room. This telephone rang once a week for ten seconds, and the person to pick up the receiver was given an order or news from Big Brother (which typically no other housemate could hear). The order could be beneficial or detrimental, but a refused order resulted in the nomination for eviction. If nobody picked up the call, the whole house would be nominated for eviction.[citation needed]