What is the dial tone?

A dial tone is a telephony signal sent by a telephone exchange or private branch exchange (PBX) to a terminating device, such as a telephone, when an off-hook condition is detected. It indicates that the exchange is working and is ready to initiate a telephone call. read more

Dial tone. A dial tone is a telephony signal sent by a telephone exchange or private branch exchange (PBX) to a terminating device, such as a telephone, when an off-hook condition is detected. It indicates that the exchange is working and is ready to initiate a telephone call. read more

A dial tone is modulating tone that signals an available line. The purpose of a dial tone is to indicate that the phone is functional and ready to make a call. The dial tone, of course, stops when the call begins. read more

Tone and pulse dialing are two ways of communicating with the central telephone relay to indicate the telephone number that you wish to call. Pulse dialing indicates each digit in the phone number by a series of clicks that corresponds only to that digit. read more