Telephone is a kind of telecommunication equipment, which allows two or more users to talk when they are too far away to hear directly. The telephone converts sound (usually the most effective human voice) into electronic signals suitable for long-distance transmission through cables or other transmission media, and plays back such signals to users in an audible form at the same time.
The first phone connects directly from one customer's office or home to another customer's location. These systems are not limited to a small number of customers, so they are quickly replaced by manually operated centralized distribution boards. This resulted in land-line telephone services, each of which was connected to the local central office switching system through a pair of dedicated lines, which had developed into a fully automatic system since the early 1900s. In order to improve mobility, from the 1930s to the mid-1900s, various radio systems have been developed for transmission between mobile customer stations on ships and cars. Motorola has launched the first handset for personal service since 1973.
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- Alarm clock
- Audio cassette
- Balloon
- Bandage
- Bell
- Book
- Bottle
- Brick
- Brushes
- Bucket
- Bulb
- Cage
- Candles
- Cards
- Cigarette
- Clock
- Coins
- Column
- Comb
- Cones
- Credit card
- Crutch
- Dice
- Dominoes
- Drum
- Electric guitar
- Electronic cigarette
- Eraser
- Falling money
- First aid kit
- Flute
- Gavel
- Glasses
- Golden cup
- Guitar
- Hairbrush
- Harp
- Heart
- Jail
- Key
- Keychain
- Kite
- Lamp
- Leash
- Lifebuoy
- Lighter
- Matches
- Matryoshka doll
- Medal
- Money
- Mop
- Mouse trap
- Pacifier
- Paper plane
- Pen
- Pencil
- Pencil sharpener
- Phone
- Piggy bank
- Plastic bag
- Postage stamp
- Recycle bin
- Ribbon
- Rubik's Cube
- Shield
- Shopping bag
- Shopping cart
- Skyscraper
- Sponge bath
- Stapler
- Star
- Stethoscope
- Sticky notes
- Street light
- Sunglasses
- Telephone booth
- Thermometer
- Toilet brush
- Toothbrush
- Torch
- Trash can
- Trombone
- Trumpet and Saxophone
- TV
- Umbrella
- Vinyl record
- Violin
- Whip
- Aluminum
- Amulet
- Antique
- Artificial Turf
- Axe
- Bathroom Interior
- Billboard
- Blade
- Bubble Wrap
- Button
- Can Opener
- Cylinder
- Dog House
- Ear Plug
- Engineer Helmet
- Fidget Spinner
- Filter
- Gate
- Gem
- Helmet
- Hob
- Icebox
- Ice Tool
- Interior Design
- Keyholder
- Keys
- Kitchen Tools
- Knife
- Ladle
- Measuring Tool
- Mobile Cover
- Mug
- Ornament
- Package
- Plate
- Princess Crown
- Rack
- Rubik's Cube
- Scented Candles
- Scissor
- Security Safe
- Spanner
- Spikes
- Square Academic Cap
- Stairs
- Tape
- Tape Measure
- Thorns
- Time
- Tools
- Tree Stand
- Vault
- Vittel
- Wand
- Weapon