Mr Pileri says that in Italy regulatory constraints prevent Telecom Italia from offering Unico with a single number.
Pileri先生说到：在意大利，有政策限制意大利电信用一个号码提供Unico服务给消费者。
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Telecom Italia, for example, began using VoIP for all phone calls between Rome and Milan in 2002, reducing costs by 60%, says Stefano Pileri, the company's chief technologist.