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CSL Limited () is Hong Kong's first mobile communications operator established in 1983. It operates a world-class GSM / WCDMA /UMTS 900 network in Hong Kong and launched the world’s first dual band 4G LTE with DC-HSPA+ network with the brands 1O1O, one2free and New World Mobility. CSL is part of HKT Group, Hong Kong's premier telecommunications service provider. CSL is an abbreviation for ''Communication Services Limited'' and their original branding of "''Create a Simple Life''". The CSL brand, logo and corporate colour were all updated in August 2011 to reflect a new company vision around increased customer centricity.〔(【引用サイトリンク】url=http://www.hkcsl.com/en/pdf/2011/CSL_Rebranding_External_Eng.pdf )〕 PCCW Mobile HK Limited () is a subsidiary of PCCW Limited involving 2G and 3G mobile communications service in Hong Kong. It was formerly Sunday Communications Limited (). It was acquired by PCCW and renamed PCCW Mobile HK Limited in 2005. PCCW made this acquisition to return to mobile business after it sold CSL to Australia's Telstra Corporation in 2001 and 2002.〔(PCCW returns to mobiles with $1.94b bid for Sunday )〕〔(Hong Kong Regulator: PCCW's Sunday Buyout Not Anticompetitive )〕 ==Timeline== *1984: CSL, a wholly owned subsidiary of Hong Kong Telecom, launches Hong Kong's first public mobile radiotelephone service using NEC's Advance Mobile Telephone System.〔(【引用サイトリンク】url=http://www.ofta.gov.hk/en/telecom_fact/milestones/main.html )〕 *July 1993: CSL launches its GSM service.〔(【引用サイトリンク】url=http://www.ofta.gov.hk/en/telecom_fact/milestones/main.html )〕 *June 1997: CSL launches its GSM 1800 network.〔(【引用サイトリンク】url=http://www.ofta.gov.hk/en/telecom_fact/milestones/main.html )〕 *December 1997: CSL acquires Pacific Link Communications. The acquisition included the digital cellular phone services (D-Amps), PCS (GSM1800) and radio paging services.〔(【引用サイトリンク】url=http://www.ofta.gov.hk/en/telecom_fact/milestones/main.html )〕 *2000 - PCCW Limited buys Cable & Wireless HKT, including subsidiary CSL (Hong Kong Telecom CSL Limited), for an estimated US$38 billion from Cable & Wireless.〔(【引用サイトリンク】url=http://www.pccw.com/About+PCCW/Company+Profile/Fast+Facts?language=en_US )〕 *February 2001: PCCW sells 60% of CSL to Telstra for $3.05 billion, in a joint venture called "Regional Wireless Company" (RWC).〔(【引用サイトリンク】url=http://reach.com/news/in_the_news_archive/20010207_Telstra_and_PCCW_Join_Forces_In_Pan.pdf )〕〔(【引用サイトリンク】url=http://www.internetnews.com/bus-news/article.php/582991 )〕 *July 2002: Telstra purchases PCCW's 40% stake in RWC for A$1.1billion, giving Telstra 100% ownership of CSL. *March 2006: CSL & New World PCS Limited merge to become the CSL New World Mobility Group. *January 2007: New World Mobile Holdings agrees to sell its quarter stake to its parent company New World Development, for US$321 million. *March 2009: CSL launches the international award winning Next G™ network. Next G™ is an all-IP HSPA+ commercial mobile broadband network capable of download speeds up to 21Mbit/s and provides the widest coverage in Hong Kong (as at 1 Dec 2011). *November 2010: Launches the world's first LTE/DC-HSPA+ network in partnership with ZTE. *June 2012: CSL and SK Telecom, the largest mobile operator in Korea, launches the world’s first 4G LTE international roaming between their two markets – Hong Kong and Korea. *Dec 2013: CSL launches the first VoLTE (Voice over LTE) network in Hong Kong. *Dec 2013: Telstra and New World Development have agreed to sell CSL to HK Telecom Trust (6823 HK), a listed unit of PCCW Ltd for $2.43B USD, (subject to regulatory approval) essentially selling it back to PCCW. Telstra owns 76.4% of CSL, New World Development owns the rest 23.6%. *May 2014: The Communications Authority agree to the sale of CSL, subject to conditions. *Dec 2014: CSL launches the first LTE Advanced network in Hong Kong. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「CSL Mobile Limited」の詳細全文を読む スポンサード リンク
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