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  2. Western Electric hand telephone sets - Wikipedia

    en.wikipedia.org/wiki/Western_Electric_hand...

    The Western Electric hand telephone sets comprise a series of telephones that were produced from 1927 by the Western Electric Company for the American Telephone and Telegraph Company (AT&T) and the Bell System. The series features the mouthpiece ( transmitter) and the earpiece ( receiver) combined into a hand-held unit, originally named a hand ...

  3. List of telephone switches - Wikipedia

    en.wikipedia.org/wiki/List_of_telephone_switches

    This lists Alcatel switches before the merger with Lucent Technologies . E10A (E10N3)- Original switch introduced in 1972 one of the earliest deployments of TDM switching in the world. E10B (E10N1)- Major revision in the 1980s which eventually saw ISDN capabilities. Common in France, Ireland, China, India and elsewhere.

  4. Telephone magneto - Wikipedia

    en.wikipedia.org/wiki/Telephone_magneto

    Telephone magneto. A telephone magneto is a hand-cranked electrical generator that uses permanent magnets to produce alternating current from a rotating armature. In early telegraphy, magnetos were used to power instruments, while in telephony they were used to generate electrical current to drive electromechanical ringers in telephone sets and ...

  5. The Merck Manuals - Wikipedia

    en.wikipedia.org/wiki/The_Merck_Manuals

    The Merck Manual of Patient Symptoms was a small printed reference summary of symptoms intended for medical students, physician assistants, and the like. The Merck Veterinary Manual, introduced in 1955, covers animal health care. The Merck Manual for Pet Health is a consumer, or pet owner, edition. The Merck Manual of Geriatrics was introduced ...

  6. Motorola bag phone - Wikipedia

    en.wikipedia.org/wiki/Motorola_Bag_Phone

    The original Motorola Bag Phone has been succeeded by the Motorola M800 and M900 Bag Phones, introduced in 2005. While they are technologically dissimilar to the original Bag Phones and use an entirely different user interface, the M800 and M900 support CDMA and GSM, respectively, and add the basic features of modern cell phones.

  7. 5ESS Switching System - Wikipedia

    en.wikipedia.org/wiki/5ESS_Switching_System

    5ESS Switching System. 5ESS used in a mobile telephone network. The 5ESS Switching System is a Class 5 telephone electronic switching system developed by Western Electric for the American Telephone and Telegraph Company (AT&T) and the Bell System in the United States. It came into service in 1982 and the last unit was produced in 2003.

  8. Mobile Telephone Service - Wikipedia

    en.wikipedia.org/wiki/Mobile_Telephone_Service

    The Mobile Telephone Service ( MTS) was a pre- cellular VHF radio system that linked to the Public Switched Telephone Network (PSTN). MTS was the radiotelephone equivalent of land dial phone service. The Mobile Telephone Service was one of the earliest mobile telephone standards. It was operator assisted in both directions, meaning that if one ...

  9. Digital enhanced cordless telecommunications - Wikipedia

    en.wikipedia.org/wiki/Digital_enhanced_cordless...

    Digital Enhanced Cordless Telecommunications ( DECT) is a cordless telephony standard maintained by ETSI. It originated in Europe, where it is the common standard, replacing earlier standards, such as CT1 and CT2. [1] Since the DECT-2020 standard, it also includes IoT communication. Beyond Europe, it has been adopted by Australia and most ...

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