| 摘要 |
PURPOSE: A device for controlling echo cancel board is provided to cancel echo efficiently by interfacing with an LEBA(Line Echo canceller Board Assembly) part directly. CONSTITUTION: In the time of transmitting echo from an exchange to a mobile subscriber of an out-going side, an LECA(Line Echo Canceller control board Assembly) part(20) controls an LEBA(Line Echo canceller Board Assembly) part for canceling echo. At this time, the LECA part(20) performs an interface with the LEBA part after storing a control information transmitted by circumferential processors. An SC(Serial Communication) bus part(7) is a serial communication bus part, and performs the interface by using an IMP(Interface Micro Processor)(6) and an SC bus between the LEBA parts.
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