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題名 | ISDN PABX PSM模組之設計 |
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作者 | 余俊錚; 陳文昌; 蔡榮進; 陳武洲; 張春喜; | 書刊名 | 電信研究 |
卷期 | 23:6 1993.12[民82.12] |
頁次 | 頁815-822 |
分類號 | 448.6 |
關鍵詞 | |
語文 | 中文(Chinese) |
中文摘要 | X.25分封交換數據網路(PSDN, Packet Switched Data Network)連線世界各地,提供方便又經濟的數據服務。ISDN(Integrated Service Digital Network)考慮現有分封用戶,定義X.25作為ISDN分封數據服務,基於此種需求,本計劃所發展分封交換模組(PSM, Packet Switching Module),提供ISDN PABX D通道數據服務。 PSM所提供D通道數據服務包括:(1)一般TE(Terminal Equipment)內線呼叫,(2)以PCIT-1(PC Based ISDN Terminal)作為VAS(Value Added Service)Terminal來提供基本速率(Basic Rate)附加價值服務,(3)連接現有PSDN用戶,(4)經ITM(ISDN Trunk Module)連接ISDN。 PSM採用RTXC(Real-Time eXecutive in C)為作業系統,系統程式本身是一個Protocol Machine,以Event-Driven方式來完成,硬體電路元件主要採用Intel Chip,PSM測試參考ASK300交換機與用戶終端設備(Customer Premise Equipment)作法分四個階段來完成。 |
英文摘要 | X.25 PSDN (Packet Switched Data Network) Connects to everywhere around the world and provides a convenient and economic packet data services. Considering the present packet data subscribers, ISDN (Integrated Service Digital Network) defines the X.25 protocol as the packet data service of ISDN. Therefore, this project develops the PSM (Packet Switching Module) to provide the D channel packet data service in ISDN PABX. PSM provides the D channel packet data services, including: (1)intra call among general TEs (Terminal Equipment), (2)using PCIT1 (PC based ISDN Terminal) as VAS (Value Added Service) terminal to provide the basic rate value added service, (3)connecting to the present PSDN subscribers, (4)connecting to ISDN via ITM (ISDN Trunk Module). PSM adopted the RTXC (Real Time eXecutive in C) as its operating system, System software is an event-driven protocol machine. The hardware circuit components are mainly Intel chips. The testing of PSM refers to ASK300 switching system handshaking procedures with CPE (Customer Premise Equipment) and is divided into four stages to accomplish. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。