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  2. Choosing a Business Phone System: 4 Steps to Finding the ...

    www.aol.com/choosing-business-phone-system-4...

    What should you look for in a small business phone service? Learn how to assess use cases, costs, features, and more. Choosing a Business Phone System: 4 Steps to Finding the Right Fit

  3. 10 Phone Systems for Small Businesses - AOL

    www.aol.com/10-phone-systems-small-businesses...

    Ready to upgrade your business communications? Start by comparing VoIP phone service providers.

  4. AT&T Merlin - Wikipedia

    en.wikipedia.org/wiki/AT&T_Merlin

    The Merlin system was originally sold in two-line, six-telephone (206); four-line, 10-telephone (410); and eight-line, 20-telephone (820) configurations. Later, there was a further 10-line, 30-telephone configuration, and with the addition of an expansion key service unit (KSU) the system could accommodate up to 30 lines and 70 telephones ...

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

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

    In general, the types of phones and other devices supported by the MVNOs are in line with the technologies used by the Mobile Network Operator (MNO), the underlying cellular network provider. All major and regional MNOs use 4G LTE / LTE Advanced and 5G NR protocols (2G and 3G having been deprecated and shut down), with GSM technologies.

  6. 1A2 Key Telephone System - Wikipedia

    en.wikipedia.org/wiki/1A2_Key_Telephone_System

    The 1A2 Key Telephone System is a modular system that provided flexible solutions for a variety of telephone service requirements. It provides multiple users with control over multiple telephone lines without the requirement for an operator, system attendant, or receptionist. Each user can select a specific telephone line to place calls on, or ...

  7. List of telephone switches - Wikipedia

    en.wikipedia.org/wiki/List_of_telephone_switches

    List of the mainly electro mechanical switching systems from Hasler AG Bern, which were used in public telephone network in Switzerland for many decades. Hasler AG finally merged into Ascom in 1987. HS 25 (modified from the Ericsson OL-100 system with double relays and 25-point selector (Ericsson license), mainly used for small villages and ...

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