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  2. On- and off-hook - Wikipedia

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

    Note: if on-hook pertains to one state, off-hook pertains to the other. The idle state, i.e., an open loop of a subscriber line or PBX user loop. An operating state of a telecommunication circuit in which transmission is disabled and a high impedance , or "open circuit ", is presented to the link by the end instrument (s).

  3. Off-hook tone - Wikipedia

    en.wikipedia.org/wiki/Off-hook_tone

    The signal is applied to the local loop by the switching system for permanent signal treatment to alert an end user (subscriber) of an off-hook condition of the telephone set, i.e. that the telephone handset should be placed on-hook. Before playing the signal, a certain timeout has to elapse, and on some systems an intercept message is ...

  4. Ringing (telephony) - Wikipedia

    en.wikipedia.org/wiki/Ringing_(telephony)

    A ring generator or ringing voltage generator is a device which outputs 20 cycle sinusoidal AC at up to 110 volts peak to power bells or annunciators in one or more telephone extensions. [4] The output stops if a handset is taken off the hook. In terminology devised by phone phreaks, a ringing generator is a magenta box.

  5. ‘My phone started ringing off the hook’: Real estate agents ...

    www.aol.com/finance/phone-started-ringing-off...

    “But literally, the day after Christmas, on the 26th of December, my phone started ringing off the hook,” he reveals. “I had never experienced that kind of volume in phone calls in my 36 ...

  6. Dial tone - Wikipedia

    en.wikipedia.org/wiki/Dial_tone

    A dial tone (dialling tone in the UK) is a telephony signal sent by a telephone exchange or private branch exchange (PBX) to a terminating device, such as a telephone, when an off-hook condition is detected. It indicates that the exchange is working and is ready to initiate a telephone call. The tone stops when the first dialed digit is recognized.

  7. Phone ringing off the hook? Election season has ... - AOL

    www.aol.com/phone-ringing-off-hook-election...

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  8. Intercept message - Wikipedia

    en.wikipedia.org/wiki/Intercept_message

    "This is a recording. Please hang up. There appears to be a receiver off the hook. Please check your main telephone and extensions, then try your call again. Thank you." The message may be repeated, then followed by a loud, rasping off-hook tone intended to remain audible even if the handset is on the desktop instead of at the subscriber's ear ...

  9. 'Ringing off the hook.' Donations help Cape Cinema in Dennis ...

    www.aol.com/ringing-off-hook-donations-help...

    The circa 1930 theater is known for the 6,400-square-foot ceiling mural by Rockwell Kent with representations of the heavens and constellations.