针对目前城域网建设中存在的问题，介绍光缆交接箱的原理、功能以及在城域网建设中的应用。
To counter the problems existing in the establishing of MAN (metropolitan area network), the author puts forward fiber-optic cabinet, introduce its principle functions and application in MAN.
针对目前城域网建设中存在的问题，介绍光缆交接箱的原理、功能以及在城域网建设中的应用。
To counter the problems existing in the establishing of MAN (metropolitan area network), the author puts forward fiber-optic cabinet, introduce its principle functions and application in MAN.
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