A series of amendments imposed mandatory interconnection, a new obligation for common carriers that would prove important in future.

一系列修正案要求各条线路强制连接，共同承运人的新职责在不久的将来证明会更加重要。

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A series of amendments imposed mandatory interconnection, a new obligation for common carriers that would prove important in future.

一系列修正案要求各条线路强制连接，共同承运人的新职责在不久的将来证明会更加重要。

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