| 程控用户交换机的中继方式及数字中继模块的设计与实现 |
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| 引用本文： | 金永海,郑少仁,陈太一.程控用户交换机的中继方式及数字中继模块的设计与实现[J].军事通信技术,1990(3). |
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| 作者姓名： | 金永海 郑少仁 陈太一 |
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| 摘 要： | 本文史介绍一种程控用户交换机数字中继模块的实现方法。它以加拿大 MITEL 公司的MH89780数字中继接口芯片(CEPT Digital Trunk Interface Hybrid)和 MT8980(8×32)时隙交换矩阵芯片(Digital Time/Space Crosspoint Switch)为基础来实现数字中继接口功能。这种中继电路为程控用户交换机进入公用电话网提供了全自功入网能力,并易于进行程控用户交换机之间的组网。数字中继采用 PCM30/32路系统,可以采用随路信令,也可以采用公共信道信令。
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| 关 键 词： | 程控用户交换机 中继方式 数字中继 |
PABX's Trunking Scheme and the Design and Implementation of Digital Trunk Module |
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| Jin Yonghai Zheng Shaoren Chen Taiyi.PABX's Trunking Scheme and the Design and Implementation of Digital Trunk Module[J].Journal of Military Communications Technology,1990(3). |
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| Authors: | Jin Yonghai Zheng Shaoren Chen Taiyi |
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| Institution: | Jin Yonghai Zheng Shaoren Chen Taiyi |
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| Abstract: | After discussing the trunking scheme of PABX,the paper intro- duces the design and implementation of Digital Trunk Module-DTM.The DTM is based on MH89780 (CETP Digital Trunk Interface Hybrid) and MT8980 (Digi- tal Time/space Crosspoint Switch) LSI chips.This scheme provides the autom- atic trunking ability for PABX to enter the telephone network and connent with other PABX easily.This module uses CCITT & CEPT 30/32 channels PCM system with channel associated signalling or common channel signalling. |
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| Keywords: | PABX trunking scheme digital trunk |
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