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过去,美国有线运营商依赖第三方骨干网提供区域网络之间的传输。如今,作为提供话音、视频和数据多重播放服务的多系统运营商(MSO),长途传输成为一个重要环节。
In the past, US cable operators relied on third-party backbones to provide transport between regional networks. Long-distance transmission is an important part of today’s multi-system operators (MSOs) that provide voice, video and data multiplay services.