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  2. VoIP phone - Wikipedia

    en.wikipedia.org/wiki/VoIP_phone

    A VoIP phone or IP phone uses voice over IP technologies for placing and transmitting telephone calls over an IP network, such as the Internet. [1] This is in contrast to a standard phone which uses the traditional public switched telephone network (PSTN).

  3. AT&T Merlin - Wikipedia

    en.wikipedia.org/wiki/AT&T_Merlin

    Merlin Plus was expandable to up to eight lines and up to 20 phone extensions. For larger installations, AT&T System 25 PBX was an advanced digital switching system that integrates voice and data communications. It was designed to meet the business communications needs of customers in the 30 to 150 station range.

  4. Business telephone system - Wikipedia

    en.wikipedia.org/wiki/Business_telephone_system

    A business telephone system is a telephone system typically used in business environments, encompassing the range of technology from the key telephone system (KTS) to the private branch exchange (PBX). A business telephone system differs from an installation of several telephones with multiple central office (CO) lines in that the CO lines used ...

  5. Huawei's tri-foldable phone stirs Chinese pride but $2,800 ...

    www.aol.com/news/huaweis-tri-foldable-phone...

    The Chinese technology giant unveiled its Mate XT, the industry's first tri-foldable phone, on Tuesday just hours after Apple introduced its artificial intelligence-enhanced iPhone 16 lineup.

  6. 3CX Phone System - Wikipedia

    en.wikipedia.org/wiki/3CX_Phone_System

    3CX Phone System. The 3CX Phone System is the software -based private branch exchange (PBX) phone system developed and marketed by the company, 3CX. The 3CX Phone System is based on the SIP (Session Initiation Protocol) standard and enables extensions to make calls via the public switched telephone network (PSTN) or via Voice over Internet ...

  7. Premium-rate telephone number - Wikipedia

    en.wikipedia.org/wiki/Premium-rate_telephone_number

    Premium-rate telephone numbers are telephone numbers that charge callers higher price rates for select services, including information and entertainment. A portion of the call fees is paid to the service provider, allowing premium calls to be an additional source of revenue for businesses. Tech support, psychic hotlines, and adult chat lines (e.g. dating and phone sex) are among the most ...

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