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  2. Rotary dial - Wikipedia

    en.wikipedia.org/wiki/Rotary_dial

    A 1931 Ericsson rotary dial telephone without lettering on the finger wheel, typical of European telephones. The 0 precedes 1. A rotary dial typically features a circular construction. The shaft that actuates the mechanical switching mechanism is driven by the finger wheel, a disk that has ten finger holes aligned close to the circumference.

  3. Last-call return - Wikipedia

    en.wikipedia.org/wiki/Last-call_return

    In Canada, the feature is commonly marketed by telephone companies as a combination of two features: Call again, a form of automatic ring back, allows a caller, on reaching a busy signal, to hang up, dial a special code, and be called back automatically when the called number is no longer busy, usually with a limit of 30 minutes.

  4. Trimline telephone - Wikipedia

    en.wikipedia.org/wiki/Trimline_telephone

    A 220 Trimline rotary desk phone, showing the innovative rotary dial with moving fingerstop Early Touch Tone Trimline with round buttons and clear plastic backplate and round non-modular handset cord Redesigned touch-tone desk model Trimline, manufactured on January 9, 1985 The Trimline 2225, one of the last phones made at the Indianapolis Works in 1986 Early foreign made Trimline, December ...

  5. Vertical service code - Wikipedia

    en.wikipedia.org/wiki/Vertical_service_code

    On rotary dial telephones, the star is replaced by dialing 11. In North American telephony, VSCs were developed by the American Telephone and Telegraph Company (AT&T) as Custom Local Area Signaling Services (CLASS or LASS) codes in the 1960s and 70s. Their use became ubiquitous throughout the 1990s and eventually became a recognized standard.

  6. Telecommunications in Canada - Wikipedia

    en.wikipedia.org/wiki/Telecommunications_in_Canada

    The All Red Line cable for the British Empire.Canada as an interconnection-point. c.a. 1903. The history of telegraphy in Canada dates back to the Province of Canada.While the first telegraph company was the Toronto, Hamilton and Niagara Electro-Magnetic Telegraph Company, founded in 1846, it was the Montreal Telegraph Company, controlled by Hugh Allan and founded a year later, that dominated ...

  7. Telephone exchange names - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange_names

    Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]

  8. Are cellphones a risk for cancer? Not likely, report says. - AOL

    www.aol.com/cellphones-risk-cancer-not-likely...

    Researchers concluded that exposure to cordless phones and fixed-site transmitters, like broadcasting antennas or base stations that serve as hubs for local wireless networks, is also unlikely to ...

  9. Portal:Telephones - Wikipedia

    en.wikipedia.org/wiki/Portal:Telephones

    A sign in the US restricting cell phone use to certain times of day (no cell phone use between 7:30–9:00 am and 2:00–4:15 pm) (from Mobile phone) Image 58 A Moto G7 Power ; its display uses a tall aspect ratio and includes a "notch".

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