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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...

when telephones had a separate earpiece (receiver), which hung from its switchhook until the user initiated a telephone call by removing it. When off hook...

is not hook flash signaling, but rather just hanging up the line. The switchhook is the device that senses whether the handset or receiver is in its cradle...

long-distance or international calls. The landline telephone contains a switchhook (A4) and an alerting device, usually a ringer (A7), that remains connected...

call to another phone or attendant console, using a transfer button or a switchhook flash and dialing the required location. The transferred call is either...

in use, the receiver hung on a hook with a switch in it, known as a "switchhook". Previous telephones required the user to operate a separate switch to...

technically primitive desk phones. Some phones only have a mechanical means of switchhook operation. The lifter allows cordless headsets to be used remotely with...

condition of the telephone when the user removes the handset from the switchhook or cradle. The exchange provides dial tone at that time to indicate to...

bell ringer Keys are now made of a soft rubber material Line switch (switchhook) eliminated from base, moved to top of phone just below the receiver Handset...

in use, the receiver hung on a hook with a switch in it, known as a "switchhook". Previous telephones required the user to operate a separate switch to...

When the called party answers by taking the telephone handset off the switchhook, the subscriber's telephone draws direct current from the central office...

other telephones in many ways, one of which was a lack of a physical switchhook button. Instead, the handset contains a small magnet which triggers a...

case was fastened to the chassis were removed and replaced by the new switchhook assembly. This had a bridging piece, like the carrying handle, but with...

hangup telephone, with the handset hanging on one side of the unit in a switchhook fork that cradled only the receiver cup. In use, the B-type telephone...

phone, but had unique features: Round buttons Round receiver/microphone Switchhook similar in shape to a slice of pie Desk or wall use The phone also required...