Caller ID
Overview
Telephone
The telephone , colloquially referred to as a phone, is a telecommunications device that transmits and receives sounds, usually the human voice. Telephones are a point-to-point communication system whose most basic function is to allow two people separated by large distances to talk to each other...
service
Vertical service code
A vertical service code or VSC is a special code dialed prior to a telephone number that engages some type of special telephone service...
, available in analog and digital phone systems and most Voice over Internet Protocol (VoIP) applications, that transmits a caller's number to the called party
Called party
The called party is a person who answers a telephone call. The person who initiates a telephone call is the calling party....
's telephone
Telephone
The telephone , colloquially referred to as a phone, is a telecommunications device that transmits and receives sounds, usually the human voice. Telephones are a point-to-point communication system whose most basic function is to allow two people separated by large distances to talk to each other...
equipment during the ringing signal, or when the call is being set up but before the call is answered.
Unanswered Questions
