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联想LEX-5000型交换机从1992年开始研制,1994年8月获得入网证。该机是采用两级分散控制方式;基本模块满装容量为5000用户线;忙时处理能力(BHCA)为150万;交换网络为2048×2048单T无阻塞网,同时设计有远端模块(容量为128～2000用户线),在此基本模块上扩展后可成为5000～32000用户线的大容量智能交换机。其系统设计可支持No.7号信令,能满足窄带ISDN。软件设计考虑向ATM过
Lenovo LEX-5000 switches developed from 1992, August 1994 access card. The machine is a two-stage decentralized control mode; the basic module full capacity of 5000 user lines; busy processing capacity (BHCA) of 1.5 million; switching network 2048 × 2048 single T non-blocking network, while designing a remote module Capacity of 128 to 2000 subscriber lines), after expansion in this basic module can be 5000 ~ 32000 subscriber lines of high-capacity intelligent switches. Its system design can support No. 7 signaling, to meet the narrowband ISDN. Software design considerations to the ATM