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  2. Google Voice - Wikipedia

    en.wikipedia.org/wiki/Google_Voice

    A Google Voice local phone number for incoming calls is currently available only for users in the United States. [13] Users may select a single U.S. phone number from various area codes, free of charge to each account. Incoming calls to the number may ring simultaneously any of the user's configured phones or the account's Google Talk feature ...

  3. Rich Communication Services - Wikipedia

    en.wikipedia.org/wiki/Rich_Communication_Services

    Website. www .gsma .com /futurenetworks /rcs /. Rich Communication Services ( RCS) is a communication protocol standard for instant messaging, primarily for mobile phones, developed and defined by the GSM Association ( GSMA ). It aims to be a replacement of SMS and MMS on cellular networks with a communication system that is richer and modern.

  4. Voice over IP - Wikipedia

    en.wikipedia.org/wiki/Voice_over_IP

    Voice over Internet Protocol ( VoIP ), [ a ] also called IP telephony, is a method and group of technologies for voice calls for the delivery of voice communication sessions over Internet Protocol (IP) networks, [ 2 ] such as the Internet. The broader terms Internet telephony, broadband telephony, and broadband phone service specifically refer ...

  5. Caller ID spoofing - Wikipedia

    en.wikipedia.org/wiki/Caller_ID_spoofing

    Caller ID spoofing. Caller ID spoofing is a spoofing attack which causes the telephone network's Caller ID to indicate to the receiver of a call that the originator of the call is a station other than the true originating station. This can lead to a display showing a phone number different from that of the telephone from which the call was placed.

  6. Switchboard operator - Wikipedia

    en.wikipedia.org/wiki/Switchboard_operator

    A telephone switchboard is a device that allows telephone lines to be interconnected, enabling the routing of calls between different phones or phone networks. [ 17] The switchboard operator was a person who manually connected calls by plugging and unplugging cords on the switchboard.

  7. List of telephony terminology - Wikipedia

    en.wikipedia.org/wiki/List_of_telephony_terminology

    Call waiting - a system that notifies a caller of another incoming telephone call by sounding a sound in the earpiece. Called party - (or callee or B-party) Caller. Calling party. Conference call (multi-party call) COCOT. Cut – unexpected, and usually sudden, termination of call, line or service.

  8. Whoscall - Wikipedia

    en.wikipedia.org/wiki/Whoscall

    Whoscall is a mobile application that offers caller identification services. It was developed by Gogolook Co., Ltd., a listed company in Taiwan. The function of Whoscall is to identify incoming calls, detect scam/harassment numbers, and filter spam text messages, blocking them accordingly. Its name is derived from a shorter version of the ...

  9. Answering machine - Wikipedia

    en.wikipedia.org/wiki/Answering_machine

    An answering machine, answerphone, or message machine, also known as telephone messaging machine (or TAM) in the UK and some Commonwealth countries, ansaphone or ansafone (from a trade name ), or telephone answering device ( TAD ), is used for answering telephone calls and recording callers' messages. When a telephone rings a set number of ...