What is red box?

Question

What is red box?

Answer 1

Letter box..the box where you post the letter

Answer 2

what kind of red box?

Before cellular (radio) telephones became cheap and widely available, people who wanted to make telephone calls away from home used payphones. Older model payphones signalled the deposit of coins by ringing bells. A dime was represented by two dings, a nickel by one, and a quarter by a lower-pitched chime. For local calls, the phone would activate when the price of a local call (a nickel or a dime) was deposited. For long distance calls, an operator would listen to the bell chimes as coins were deposited, would record payment of the toll charge, and would then connect the call. With the advent of solid-state technology, bells were replaced by electronic tones. One beep was a nickel, two a dime, and five a quarter. This permitted completion of toll calls without operator intervention, because the tones could be detected by the automatic switching system at the telephone company.

Phone phreaks came up with methods to play these tones into the telephone's microphone, thus fooling the system into completing free calls. These methods included playing back the tones using an audio recorder (usually a tape recorder as magnetic tape was then the primary means of recording audio).

A red box is a phreaking device that synthesizes these tones, which are not unlike the DTMF tones used for dialing. Other devices which generated these tones included modified Radio Shack tone dialers, and Hallmark audio-recording greeting cards.

Answer 3

a new restaurant opened on linking rd in Mumbai

Answer 4

Black box painted in red.

Answer 5

I heard and know about black box.

I do not know when somebody change the color in red.

Answer 6

Box Painted With Red Colour