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Central Office Switching Systems Division Oki Electric Industry Co. Ltd. | 論文著者
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Yokoyama Ryuzo
Central Office Switching Systems Division Oki Electric Industry Co. Ltd.
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Sasajima Masao
Central Office Switching Systems Division Oki Electric Industry Co. Ltd.
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Fujiwara Yuhiko
Central Office Switching Systems Division Oki Electric Industry Co. Ltd.