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Hiroshi Yokoyama

Network Engineer @ NTT Communications

Hiroshi Yokoyama Contact Details

Network Engineer @ NTT Communications
Network Engineer @ Sumisho Computer Systems Corporation
Certificate IV in IT networking, Networking @ Holmesglen Institute

Network Engineer @ In charge of designing and constructing global network Knowledge - SDH/SONET - Optical transmission equipment - Digital hierarchy/concatenation - Optical interface - Network synchronization - Clock - SDH/SONETの通信方式 - 光伝送装置 - 多重化/同期多重化 - 光インターフェース - 網同期 - クロック From April 2013 to Present (2 years 9 months) Tokyo, JapanNetwork Engineer @ From August 2008 

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