名詞 telephony:

1. transmitting speech at a distance
   同義詞：telephone

1. In telephony, a signal used by a telephone operator to gain the attention of another, or a signal sent by a subscriber held by an operator to gain the latter's attention.
   在電話技術中，電話操作員使用的一種信號，用來獲得另一次注意，或由操作員保持的用戶發(fā)送的一種信號，用以獲得隨后的注意。
2. In telephony, the use of tones to transmit supervisory, address and alerting signals over a circuit.
   在電話技術中，利用音調(diào)在電路中傳送監(jiān)控、地址和報警信號的做法。