network control unit

Japanese: network control unit(英語表記)networkcontrolunit
network control unit

A network control unit (NCU) is a device that connects a telephone line to a network by using a network controller (NCU) to control the number of calls received, the number of calls received, and the number of calls received.
[Data Communications System]
Data communication systems include personal systems created by companies or other organizations for their own internal use, shared systems that connect computers or terminals in different companies, and third-party systems created for the purpose of providing services such as time-sharing systems to third parties.

*Some of the terminology explanations that mention "network control unit" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…通信回線がアナログ専用回線であるときには変復調器(モデム)を通して通信回線への接続が行われ,ディジタル専用回線であるときにはディジタルサービス装置DSU(digital service unitの略)を通して接続が行われる。さらに電話交換回線を使用するときには,ダイヤルの発信,呼出し信号に対する応答などを知る目的でネットワーク制御ユニットNCU(network control unitの略)が設けられる。
[データ通信制度]
 データ通信システムには企業などが自社内で使用することを目的として形成する本人使用システム,異なる企業にあるコンピューターもしくは端末を相互に接続する共同使用システム,および第3者に対してタイムシェアリングシステムなどのサービスを提供する目的で形成される他人使用システムとがある。…

※「network control unit」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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