DDN是什么意思
網(wǎng)絡(luò)釋義：數(shù)字?jǐn)?shù)據(jù)電路；數(shù)字?jǐn)?shù)據(jù)網(wǎng)；數(shù)據(jù)定義名；數(shù)字?jǐn)?shù)據(jù)網(wǎng)絡(luò)
1 . Digital Data Network ( DDN ) is a data transmisston network using digital channels.
數(shù)字?jǐn)?shù)據(jù)網(wǎng) ( DDN) 是采用數(shù)字信道來傳輸數(shù)據(jù)信號的數(shù)據(jù)傳輸網(wǎng).
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2 . Driect line 、 ISDN 、 DDN 、 Frame relay 、 ADSL 、 Broadband 、 Hunting line. 、 E 1、 PRI and so on.
如:直線電話、ISDN、DDN、幀中繼、ADSL、寬頻線路、模擬中繼線路、數(shù)字中繼線路(E1及PRI)等.
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3 . The way of data transfer is through socket communication based on DDN network.
系統(tǒng)網(wǎng)絡(luò)是DDN專線組成的局域網(wǎng),數(shù)據(jù)傳輸采用socket通訊方式.
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4 . The author also describes the framework and communications system of SCADA, such as server, RTU, DDN and GPRS etc.
著重描述SCADA系統(tǒng)的軟硬件結(jié)構(gòu)及通信系統(tǒng), 包括實時數(shù)據(jù)采集服務(wù)器、歷史數(shù)據(jù)服務(wù)器 、 遠(yuǎn)程控制單元RTU 、 DDN網(wǎng)及GPRS傳輸?shù)?
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5 . With the full development of data communication, DDN service of Jiaozuo develops comparatively fast.
隨著數(shù)據(jù)通信的飛速發(fā)展, 焦作的DDN業(yè)務(wù)發(fā)展較快.
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