第二类是有源设备的运营商(OpCo), 电信通,提供基于主动式基础设施(包括转换器和传输设备)的网络批发服务。
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包括管道和固定线路服务等; 第二层是批发经营商 (OpCo),聚焦于有源 ..
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Tweeter stores (now formally known as Tweeter Opco) has had a rough go of things over the past year, but is hoping that a little experimentation in April will help get things moving in the right direction.
ENGADGET: Tweeter jump-starts operations with new stores and concepts
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