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  2. Operator messaging - Wikipedia

    en.wikipedia.org/wiki/Operator_messaging

    It is a service that consists of live operators who answer incoming calls and input the callers' messages on a computer, then transmit the message using the Telocator Alphanumeric Protocol to the paging provider's radio towers. Alphanumeric pagers receive the messages in the form of words and numbers.

  3. Microsoft Messaging - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Messaging

    Messaging (also known as Microsoft Messaging, and as of recently, Windows Operator Messages) is an instant messaging Universal Windows Platform app for Windows 8.0, Windows 10 and Windows 10 Mobile. The mobile version allows SMS , MMS and RCS messaging.

  4. Intercept message - Wikipedia

    en.wikipedia.org/wiki/Intercept_message

    Please check the number and dial again, or call your operator to help you. Most of these messages often include the phrase "Your call cannot be completed as dialed." Sometimes a message would say to first dial a 1 or a 0 (the toll prefix for a trunk call) plus the area code of the called number. A message may also be played when 0 or 1 followed ...

  5. List of mobile virtual network operators in the United States

    en.wikipedia.org/wiki/List_of_mobile_virtual...

    Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the four major cellular carriers in the country—AT&T Mobility, Boost Mobile, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.

  6. Signalling System No. 7 - Wikipedia

    en.wikipedia.org/wiki/Signalling_System_No._7

    Signalling System No. 7 (SS7) is a set of telephony signaling protocols developed in the 1970s that is used to setup and teardown telephone calls on most parts of the global public switched telephone network (PSTN).

  7. IRC - Wikipedia

    en.wikipedia.org/wiki/IRC

    A channel operator is a client on an IRC channel that manages the channel. IRC channel operators can be easily seen by the symbol or icon next to their name (varies by client implementation, commonly a "@" symbol prefix, a green circle, or a Latin letter "+o"/"o"). On most networks, an operator can: Kick a user. Ban a user.

  8. Z code - Wikipedia

    en.wikipedia.org/wiki/Z_code

    1. One set of codes was originally developed by Cable & Wireless Ltd. (the Cable & Wireless Service Z code) for commercial communications in the early days of wire and radio communications.

  9. Voicemail - Wikipedia

    en.wikipedia.org/wiki/Voicemail

    Operators wrote down a caller's message, sent a page alert or "beep" and when the party called back, an operator dictated the message. With the introduction of "voice" pagers, like the Motorola Pageboy II operators could transmit a voice message directly to the pager and the user could hear the message. However, messages arrival was often ...