What is a rotary phone?
Once a rotary phone is considered a standard for telephone communication, it has provided customers a simple process to use a round dial to access the network and enter a number of numbers to address another subscriber. The rotary phone developed at the end of the 19th century and was the only most popular dialing style until the 1970s, when the technology of the previous 20 years button was associated with a newer and safer signaling phone. Retro rotary phones are still available although they are relatively unusual. Merified that telephone operators deliberately incorrect calls to their business have developed an automated switch that allowed subscribers to join directly without passing the operator. In 1891 he was awarded a patent and set up his own telephone exchange.
The automatic switch was the first step, but the system was required by the system to the number of another subscriber was not very effective. In 1896 the first patent for a rotary device was served to allowon dialing the subscriber level. It is true that in 1898 the patent was acquired by John and Charles Erickson, along with A.E. Keith. The original swivel phone dial that was used to turn the dial was designed to work with the slowly developing numbering system that provided the sequence of access numbers.
In 1904, the design for the phones of the swivel dial was changed to contain holes on the dialing plate than to grasp their fingers. However, most phones in the period are still working on the main subscriber associated with an operator who can handle the actual connection of two subscribers. Only around 1919 the phone of a rotary dial became popular in metropolitan areas. Over the next two decades, the use of the rotary pHeden is filtered into small towns and rural areas. In the 1950s, the rotary phone was an industry standard.
With the use of technology known as pulse. The pulse signal was a means of starting a dialing action that created an interruption of the power flow. Using the dial for entering each number in the sequence, it was possible to send a message to a telephone signaling device that would automatically transfer the caller to the correct placement of the subscriber. Pulse signaling worked well to make Point to Point telephone calls, but did not allow anything else.
By the end of the 1960s, a new signaling technology, known as a touch tone, began to replace a rotary phone with a dial -up pad that contained keys rather than a round dial. The tones emitted by the digitized touch tone service allowed faster switching and also opened the door for other consumer communication services that the older pulse and rotary technology could not provide. During the 1970s and 1980s, the rotary phone began to fall out. Businesses were the first to throwIli rotary phones and moved to touch services, while residential consumers moved to newer technology in large numbers after the telephone industry deregulation in 1984.
Today, many telephone systems no longer provide the Pulse Service for subscribers. However, several manufacturers offer replicas of rotary phones, but they use full duplex signaling found with a touch tone. In any case, the heritage of a rotary phone lives in American culture, where almost everyone refers to the process of using the phone to contact with another place as "dialing".