In January 2000, the indirect access fixed-line telephone service was launched, using Portugal Telecom's infrastructures and the 1091 prefix.In May of the same year, Telecel entered the Internet Service Provider and web portal businesses under the brand Netc (pronounced "netcetera").Banco Espírito Santo and Amorim used the IPO and subsequent sales to sell out with considerable gains, and the Vodafone Group eventually took a controlling share.In 2003, the Vodafone Group launched a successful tender offer for all outstanding shares not in its possession, thus becoming the full owner of then-called Telecel-Vodafone.[citation needed] In 2002, the Netc ISP and web portal were rebranded Vizzavi, Vodafone's multimedia brand in association with Vivendi Universal.[4] In July 2015, Vodafone Portugal starts offering a 4K (Ultra HD) television channel to its TV-over-fibre customers.