...中华铁道网 采用嵌入控制通路（Embedded Control Channel ，ECC）的7层协议栈来在SDH数据通信通路(Data Communications Channel，DCC)上传送OAM（Operation Administration and Maintenance）消息..
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ADCC Asynchronous Data Communications Channel 异步数据通信信道
D DCC Data Communications Channel 数据通信通路
Data Communications Channel DCC 数据通信信道
DCC Data Communications Channel 数据通信通路
Data Communications Channel over OSC 嵌入OSC数据通信通道
A voice or data communications channel currently in use.
目前使用的话音或数据通信信道。
It’shard to track the effectiveness of each communications channel becausePepsi Refresh does not reveal tracking data to participants.
因为PepsiRefresh不向参与者公开追踪数据，所以很难追踪到每个沟通通道的有效性。
HDR (high data rate) is a high rate wireless access technology in CDMA2000 system, it can satisfy the need for higher data rate communications out of the voice channel.
高速数据率是面向CD MA2000所开发的高速无线接入技术，它可以在以传输电话语音为主的通道以外，引进可以满足高速数据通信需求的技术。
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