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  2. Hook flash - Wikipedia

    en.wikipedia.org/wiki/Hook_flash

    The flash signal briefly disconnects the local loop circuit by momentarily depressing the hook switch or using a dedicated button. In systems influenced by American standards, the switching system will accept quite a long disconnection time, within a duration between 300 ms and 1000 ms, typical of a manual hook flash.

  3. Call waiting - Wikipedia

    en.wikipedia.org/wiki/Call_waiting

    Call waiting in Europe uses an "R" (recall) button on the phone. This performs a similar function to a North American hook flash button but is much shorter duration, typically 80ms to 100ms, vs. 250ms in North America. In some networks, pressing R toggles between the calls, similar to North America.

  4. Conference call - Wikipedia

    en.wikipedia.org/wiki/Conference_call

    For a three-way call, the first called party is dialed. Then the hook flash button (or recall button) is pressed and the other called party's phone number is dialed. While it is ringing, flash/recall is pressed again to connect the three people together. This option allows callers to add a second outgoing call to an already connected call.

  5. Lineman's handset - Wikipedia

    en.wikipedia.org/wiki/Lineman's_handset

    Hook flash button; Tone/pulse dialing selection switch; Low-pass filtering to prevent disruption of data communications (such as DSL) A mechanical hook for hanging the set from a tool belt. On some sets, it may be moved to the receiver side, mouthpiece side, or removed altogether.

  6. Telephone hook - Wikipedia

    en.wikipedia.org/wiki/Telephone_hook

    A telephone hook or switchhook is an electrical switch which indicates when the phone is hung up, often with a lever or magnetic button inside the cradle or base where a telephone handset resides. It takes its name from old wooden wall telephones and candlestick telephones, where the mouthpiece was mounted on the telephone box and, due to ...

  7. Invisalign Rubber Bands: Who Needs Them and What They Do

    www.healthline.com/health/dental-and-oral-health/...

    Method 1. Take your Invisalign aligners out of your mouth and line up the top and bottom tray in your hand. Look for the hooks on your top and bottom aligner where your elastics should go. Connect ...

  8. Understanding Hot Flashes: Triggers, Relief, and More

    www.healthline.com/health/menopause/...

    A hot flash is a feeling of intense heat, not caused by external sources. Hot flashes can appear suddenly, or you may feel them coming on. You may experience: tingling in your fingers. your heart ...

  9. On- and off-hook - Wikipedia

    en.wikipedia.org/wiki/On-_and_Off-hook

    In telephony, on-hook and off-hook are two states of a communication circuit. On subscriber telephones the states are produced by placing the handset onto or off the hookswitch. Placing the circuit into the off-hook state is also called seizing the line. Off-hook originally referred to the condition that prevailed when telephones had a separate ...

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