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电话光端机与PDH光端机的区别
前面，pg电子官网 为大家介绍过SDH光端机和PDH光端机的区别，今天就来介绍下电话光端机与PDH光端机的区别。什么电话光端机?电话光端机是基于自主软件和厚薄膜工艺技术而推出的新一代高集成度单板光路复接设备，它可以在光传输通道上直接提供最多1~420路电话语音接口和1路100M以太…
2024-5-26 2:03:03[未知IP0801]网友
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2024-4-26 23:33:39[未知IP0801]网友
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