Call Blocking
Encyclopedia
Call blocking is the ability to prevent incoming 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...

 calls from a given phone number
Telephone number
A telephone number or phone number is a sequence of digits used to call from one telephone line to another in a public switched telephone network. When telephone numbers were invented, they were short — as few as one, two or three digits — and were given orally to a switchboard operator...

. Various methods of call blocking include:
  • Sending caller to voicemail
    Voicemail
    Voicemail is a computer based system that allows users and subscribers to exchange personal voice messages; to select and deliver voice information; and to process transactions relating to individuals, organizations, products and services, using an ordinary telephone...

  • Sending caller to busy signal
    Busy signal
    A busy signal in telephony is an audible or visual signal to the calling party that indicates failure to complete the requested connection of that particular telephone call....

  • Sending caller to "Number No Longer in Service"
  • Sending caller to "Keep Ringing"
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