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Definition of Dial tone
1. Noun. A telephony signal, usually in the form of a sound, used to indicate that the telephone exchange is working, has recognized an off-hook, and is ready to accept a call. ¹
¹ Source: wiktionary.com
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1. Noun. A telephony signal, usually in the form of a sound, used to indicate that the telephone exchange is working, has recognized an off-hook, and is ready to accept a call. ¹
¹ Source: wiktionary.com