Surveillance signal

Japanese: 監視信号 - かんししんごう
Surveillance signal

…In contrast, signals exchanged between exchanges are called inter-office signals. Inter-office signals can be broadly divided into selection signals and supervisory signals. Selection signals are control information such as dial number information that is necessary for selecting a relay route. …

*Some of the terminology that mentions "surveillance signals" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…これに対して,交換局間でやりとりされる信号を局間信号という。局間信号を大別すると選択信号と監視信号がある。選択信号はダイヤル数字情報などの中継経路の選択に必要な制御情報である。…

※「監視信号」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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