通信人家园

标题: PTN与SDH  [查看完整版帖子] [打印本页]

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时间:  2010-5-14 10:55

作者: yzzlxx562774     标题: PTN与SDH

PTN与SDH之间怎么连接？什么是带外网关啊？请教各位大侠了！:)

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