TAD meaning in Telecommunication ?

Answer:

What is Telephone Answering Device mean?

An answering machine, answerphone or message machine, also known as telephone messaging machine (or TAM) in the UK and some Commonwealth countries, ansaphone or ansafone (from a trade name), or telephone answering device (TAD), is used for answering telephones and recording callers' messages. If a phone rings a number of times predetermined by the phone's owner, and nobody is present to answer the incoming call, the answering machine will activate and play either a generic announcement or the voice of the person being called announcing that nobody is able to come to the phone at the moment. Following the announcement is a beeping tone which prompts the caller to record a message after the tone concludes.

Unlike voicemail, which can be a centralized or networked system that covers, and mostly extends, similar functions, an answering machine is set up in the user's premises alongside—or incorporated within—the user's land-line telephone. Unlike operator messaging, the caller does not talk to a human.

As landlines become less important, due to the shift to cell phone technology, and as unified communications mature, the installed base of TADs is shrinking.

reference

Full Form	Category
Trinidad (co)	Airport Code
Total Amount Due	Banking
The Associated Designers	Business
Tax Allocation District	Business
Technical Assistance District	Community
Thaddeus	Community
Thermophilic Aerobic Digestion	Community
Telephony Audio Device	Computing
Technical Activities Division	Computing
Traffic Anomaly Detector	Computing
Task Aware Debugging	Computing
The Architect's Desktop	Computing
Tadpole Finance	Cryptocurrency
Technical Audio Device	Electronics
Traffic Accident Data	General
Travel Assistant Device	General
Traction Avant Danmark	General
Type Area And Detail	General
Touch And Die	General
Thinking And Doing	General
Tolerance Acceptance And Diversity	General
Tarrant Appraisal District	General
The American Dream	General
Triple Aught Design	General
Temporary Anchorage Device	General
Think Ask Dialogue	General
Turn Around Document	General
Tissue Air Drying	General
Through Air Drying	General
Teaching Administrative Development	General
Thoughts Actions Destiny	General
Thumbnail Art Design	General
Transcription Activation Domain	General
Ten A Day	General
Thesis And Dissertation	General
Tuned Absorber Diffuser	General
Toby And Doris	General
Temporary Anchorage Devices	General
Thomas Andrew Doyle	General
Transitional Assistance Department	General
Technical Assistance Document	General
Topologically Associating Domain	General
Technical Audio Devices	General
Turner Auto Design	General
Thermostatic Air Diverter	General
Traction Adding Differential	General
Top Alcohol Dragster	General
Tooling Aid Design	General
Transmissions And Driveline	General
Tacho Drive Adaptor	General
Technology Activities Database	Governmental
Temporary Assigned Duty	Governmental
Transit-Adjacent Development	Governmental
T·k Astronomi Dernegi	International
Türk Astronomi Derneği	International
Abdominal diameter Transverse	Medical
Tactical Air Direction	Military and Defence
Temporary Additional Duty (non-unit-related Personnel)	Military and Defence
Time Available for Delivery	Military and Defence
Temporary Additional Duty	Military and Defence
Time and Date	Military and Defence
Target Audience Description	Military and Defence
Theater Air Defense	Military and Defence
Time-averaged Difference	Physics Related
Telephone Answering Device	Telecommunication