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題名 | CENTREX用無線用戶系統中央控制固定端類比用戶模組之設計=The Design of the CCFP ALM of Wireless Customer System for CENTREX |
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作者 | 郭家旭; 孫文海; 楊博如; 余炎清; 李儒坤; 呂金寶; | 書刊名 | 電信研究 |
卷期 | 27:3 1997.06[民86.06] |
頁次 | 頁389-400 |
分類號 | 448.84 |
關鍵詞 | 泛歐數位式無線通訊系統; 集中式用戶自動交換機; 中央控制固定端; 類比用戶模組; Digital european cordless telecommunication; DECT; Centralized extension system; CENTREX; Central control fixed part; CCFP; Analog line module; |
語文 | 中文(Chinese) |
中文摘要 | ALM (Analog Line Module)類比電話用戶硬體模組是負責CCFP (Central Control Fixed Part) 中央控制固定端和 PSTN (Public Switched Telephone Network) 公眾交換電 話網路類比用戶線的介接。 將語音訊號由 PCM-32 鏈路載送至 NSM (Network Switching Module) 網路交換模組, 或是將 NSM 模組所傳送來 PCM-32 鏈路上之資料轉送至 PSTN 類 比用戶線端。此外,ALM 亦以類比電話用戶線介接有線話機,此功能將使有線話機與無線話 機互為分機,而可適用於市區與郊區之室內,以達成特定區內之任何時、地均能通話之功能 ,並使得被叫及撥叫更彈性化。 本文將描述 CENTREX 用無線用戶系統中央控制固定端類比 用戶模組之架構設計。 |
英文摘要 | ALM (Analog Line Module) is the analog line interface between CCFP (Central Control Fixed Part) and PSTN (Public Switched Telephone Network). ALM takes responsibility for transferring the voice data from PCM-32 links to NSM (Network Switching Module) and is capable of carrying the data on PCM-32 links from NSM to analog line. ALM also connects the extended wire phones through analog lines to form a wire-to-wireless loop. It is more flexible to provide the voice service for indoor/outdoor communication. In this paper, we describe the design of the CCFP ALM of wireless customer system for CENTREX. |
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