The concept of exchangeable digital circuit multiplication (EDCM) is proposed. The implementation technique of EDCM is put forward.
提出了可交换数字电路倍增的概念，并提出了在电路交换网上实现可交换数字电路倍增（ED CM）的技术。
The limitation of traditional DCME (only point to (multi -) point transmission) is overcome by the new one. EDCM network can be easily formed.
克服了传统数字电路倍增设备只能点对(多)点传输的局限，可方便的组成EDCM网。
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