switch hook

(redirected from hook switch)

switch hook

[′swich ‚hu̇k]
(electricity)
A switch on a telephone set that operates when the receiver is placed on the hook or removed from it.

switch hook

Also called a "hook switch," it is the control mechanism that answers and hangs up a call on a telephone. When you place the handset in the telephone cradle, it depresses the switch hook's button and hangs up (puts the phone "on hook"). See off-hook and flash button.
References in periodicals archive ?
Tenders are invited for Cordless Telephone With Head Worn Type Mic And Speaker Set, On-Off Type Hook Switch, Volume Control Buttons, Caller Id, Dialling Key Pad.
Each phone has 3 XML programmable soft keys, 3-way conferencing, Electronic Hook Switch (EHS) support for Plantronics headsets, support for 20 languages, full-duplex speakerphones with advanced acoustic echo cancellation, dedicated buttons for intercom/paging and call recording and a large phonebook with up to 500 contacts and call history with up to 200 records.
Allan - who has switched allegiances after playing for Scotland U20s - has already made a big impression at club level with Perpignan, where his fine form has seen James Hook switch to full-back.
RISING STAR: TOMMASO ALLAN The fly-half's form for Perpignan has seen James Hook switch to full-back, while also earning the 20-yearold his first caps in the November internationals.
The company said that the GXP2124 is its first HD IP telephone with Electronic Hook Switch (EHS) support for Plantronics headsets.
Under the cover, I was surprised to discover an LCD display and a four-way thumb pad, which allows users to customize various features, including volume, bass/treble/normal, hook switch selection, range/power selection and protection level, which guards against sudden spikes in volume (acoustic shock).
If you think you need it, then the -1 says lower the hook switch 1,500 feet prior to the cable to ensure you have full down pressure for cable engagement.
In the past, the hook switch of a telephone physically disconnected the wires inside the telephone that established the talk path (an electrical conduit between the handset and the other party).
A complete modem function which eliminates the need for a modem controller, data pump, codec, 2-to-4 wire converter, isolation transformer, hook switch, ringing detector, gyrator, polarity guard and over voltage protection
In addition, the device features drive circuitry for an external solid-state hook switch in order to facilitate electronic on/off hook switching, pulse dialing and register recall.
If the cable is not placed on a cable hook switch by the time the transporter reaches the end of this zone, a through-beam infrared emitter on the motor mount activates both an audio and visual alarm.
Each phone has 3 XML programmable soft keys, 3-way conferencing, Electronic Hook Switch (EHS) support for Plantronics headsets, support for 20 languages, full duplex speakerphone with advanced acoustic echo cancellation, dedicated buttons for intercom/paging and call recording, personalized music ring tone/ring back tone, integration with advanced Web/enterprise applications, and a large phonebook with up to 500 contacts and call history with up to 200 records, etc.