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突发式回波抵消器(ECBM)是一套以合理成本解决I SDN基本接续问题的硅片当中的一种。ECBM采用回波抵消和时间压缩技术.它在每个传输方向留出空闲周期;由此,可得到只有接收信号或只有回波的周期,从而大大简化了回波抵消器和定时恢复。已研制出一整套组件,提供ISDN基本接续(144 kb/s)所需的信号处理、供电、和用户线接口功能;其中考虑到了不同连接方式的要求,并为适应可能出现的新标准提供灵活性。通过协调可以避免“过死”的组件,和方便某些接续功能(例如:激活、维护、监测)。
The Burst Echo Canceller (ECBM) is one of a suite of silicon that addresses the basic connectivity issues of I SDN at a reasonable cost. The ECBM uses echo cancellation and time-compression techniques, leaving idle cycles in each direction of transmission; thus, only the period of the received signal or only the echo can be obtained, greatly simplifying the echo canceller and timing recovery. A complete package of components has been developed to provide the signal processing, power and subscriber line interface functions required for basic ISDN connection (144 kb / s); which takes into account the requirements of the different connection modes and provides flexibility in accommodating new standards that may arise Sex. By coordinating components that can avoid “dead”, and to facilitate certain splice functions (eg, activation, maintenance, monitoring).