[...] broadcaster offers viewers the opportunity to participate in a prize game by means of immediately dialling a premium rate telephone number, and thus in return for payment eur-lex.europa.eu

[...] telespectadores a possibilidade de participarem num concurso marcando imediatamente um número de telefone de valor acrescentado e, portanto, mediante pagamento

http://www.jn.pt/PaginaInicial/Economia/Interior.aspx?conten...

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Note added at 11 horas (2012-12-15 14:17:17 GMT)
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What are premium rate numbers?
Premium rate numbers offer services you are charged for through your monthly phone bill or through credit on your mobile phone. These services tend to cost more than a normal phone call or text message. You can access or subscribe to these services through:
your landline or mobile phone
the red button on your TV remote
the internet and emails