...Supervision signals are signals used to monitor the status of a call and perform necessary control based on that status. There are control signals that command the other station to perform an action, such as starting or disconnecting, and display signals that notify the other station of the call status, such as answering or ending the call. There are also billing signals for transferring fee information, and network management signals used for managing and operating the communication network. Two methods are used to transmit signals between stations, as shown in Figure 2. ... *Some of the terminology explanations that mention "charging signals" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…監視信号は呼の状態を監視し,それに基づいて必要な制御を行うための信号であり,起動や切断など相手局に動作を指令する制御信号と,応答や終話など相手局に呼の状態を通知するための表示信号などがある。そのほか,料金情報転送のための課金信号,通信網の管理や運用などに使用される網管理信号などもある。局間信号の伝達方法には図2に示すような二通りの方式が用いられている。… ※「課金信号」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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