单词:common carrier telecommunications
单词:common carrier telecommunications 相关文章
T1 Carrier A T1 carrier is a time-division multiplexed digital transmission facility capable of supporting 24 voice channels, (each encoded as a 64 kbps PCM DS0 signal), producing an aggregate multipl
C/N Carrier/Noise 载波噪声比 CND Calling Number Display 主叫号码显示 CNET Circuit NETwork 电路交换网 CNF Comfort Noise Frame 舒适噪声帧 CNM Customer Network Management 客户网络管
CDF Combined Distribution Frame 组合配线架 CDG CDMA(Code Division Multiple Access) Development Group CDMA(码分多址)开发小组 CD-I Compact Disk-Interactive 交互式光盘 CDMA Code
Part One Making a Long Distance Call第一部分 打长途电话Operator: Good morning. Operator. Can I help you? 早晨好,我是接线员。要我为您效劳吗? Jack: Yes. I'd like to make a long distance call to England. Could you please tel
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