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SDH数字交叉连接设备(SDXC)技术要求和测试方法
Specifications and Measurement Methods for SDH Digital Cross Connect Equipment (SDXC)
价格:¥0.00
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2048kbit/s线路终端设备技术条件
价格:¥0.00
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2048kbit/s再生中继机技术条件
价格:¥0.00
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2048kbit/s30路脉码调制用户环路 终端设备技术要求和测试方法
价格:¥0.00
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数字通信设备数字接口
Digital interfaces of digital communication equipment
价格:¥0.00
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中继信令处理模块通用规范
General specification for trunk signalling processing modules
价格:¥0.00
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64kbit/s时分复用设备电性能测量方法
Methods of measurement for electronic performance of 64kbit/s time division multiplex equipments
价格:¥0.00
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64/32kbit/s时分复用设备通用规范
Generic specification for 64/32kbit/s time division multiplex equipments
价格:¥0.00
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SZ-01数字信息传输系统
SZ-01 digital information transmission system
价格:¥0.00
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