dial tone ( synonym found)
Definition of dial tone:

(n) : 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
Definition of dial tone:

(n) : 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
Back to Top