What is a teletype on an ANDROID phone, how to use it

Modern mobile devices have many hidden capabilities that their owners are not even aware of, but are discovered by chance while researching the functionality of the device. One of them is “Teletype Mode” on Android, designated by the mysterious abbreviation TTY. In fact, the function is extremely useful, but only for a narrow category of users. Having turned it on, you will notice that the smartphone has switched to an incomprehensible operating mode, and it has become impossible to control it in the usual format. What is a teletype and why is it needed? Read more in this review.

What it is

Teletype or TTY is an electromechanical printing machine that transmits messages via cable. It became widespread in the twenties of the twentieth century, but was gradually replaced by new technologies. In the photo you can see what she looked like:

And now, in the present tense, teletype - what is it on the phone, why is the option needed? It is intended for full communication between people who have certain hearing difficulties (congenital and acquired).

Removing communication restrictions is the main goal of this function:

• Transfer of information;
• Receiving data.

We'll talk about the operating principle below. In the meantime, we note that almost all modern phone models are equipped with a similar feature - you need to find it in the settings and activate it.

Performance

This device is also called a teleprinter . It is an electromechanical device designed to type messages and receive them .

To begin with, the devices communicated with each other through their own special wires, and later their communication became possible thanks to special telephone or telegraph cables, which significantly simplified communication between users of such equipment.

Nowadays, the communication capabilities of such devices have increased even more. The history of the creation of this printing device goes back to the middle of the nineteenth century, when the choice of means of transmitting information was significantly limited.

Operating principle and modes

You found out what a teletype on Android is - one definition is not enough, we need to talk about the features of the work. What is the principle?

• The text entered by the subscriber is automatically converted into audio;
• Received audio messages are decoded into text;
• Data is transmitted over a regular telephone line.

A person with a hearing loss can use Internet TTY to receive and answer calls using the keypad and screen.

Now let’s note the possible modes of operation of the communication function:

• Full TTY – fully functional communication. Both interlocutors can use text communication during the call;
• HCO or Hearing Carry-Over – the user can hear a voice reading the received text or enter a text to send;
• VCO or Voice Carry-Over - the user can send a message by voice and receive a response in the form of a text message.

Peculiarities

Let's note important features:

• The mode can only work unilaterally - only one of the subscribers can transmit a message;
• It is customary to expect about seven rings for an outgoing call;
• After typing is completed, a special abbreviation is used to indicate that the text field is free.

You already know what a teletype is in an Android phone - if you need this option, you need to discuss how to enable it on phones with different operating systems.

Should I disable TTY?

You need to disable this feature. It is supposed to drain battery power, although only a little. By default, this mode is inactive, but some users often “walk” through the settings, turning on and off functions whose purpose they have no idea. There are reports on the forums that the phone began to discharge more slowly after disabling this mode. So we recommend turning it off.

However, for informational purposes and just for fun, we recommend trying to communicate with someone in TTY mode. This may seem funny. Although sometimes even an adapter is not enough. The function must also be supported by the mobile operator.

How to turn on the TTY

The TTY feature is enabled when you see the TTY symbol at the top of the screen. The option is designated as a telephone handset placed above the keypad.

TTY mode in Android can be activated as follows:

• Open your device settings;
• Go to the “Other settings” block (in some smartphones it may be called “Accessibility”);
• Open the menu and find the line with the name of the teletype function;
• Select the type of use - full-featured, with the ability to transmit voice and with the ability to hear the interlocutor;
• Click on the appropriate line and save your changes. (Please note that the instructions will look slightly different on different models,

Let's discuss how to activate TTY mode on iPhone:

• Enter your smartphone settings;
• Click on the “Basic” block;
• Select the line “Universal Access”;
• In the “Hearing” section, find the function of the same name;
• Activate the operation by moving the toggle switch to the “On” position.

There should be no questions about how to disable the teletype - the instructions will be completely similar, in the last paragraph you need to select the “Disable” item or move the option toggle switch to the inactive position.

What are the reasons for the unpopularity of TTY

Many modern smartphones hit the market without this feature. There is no need for its presence, so it is quite logical that it is not included in the functionality of phones. Firstly, only a few people use it. Secondly, there are many analogues that are more convenient and better. Even ordinary people with normal speech and hearing abilities prefer to chat on social networks. It's much more interesting and convenient there. So various chats and social networks completely replaced TTY. Thirdly, there is YouTube, which makes it much easier for deaf and mute people to communicate. At a minimum, you can sign words and read lips, which a teletype cannot offer.

And in general, manufacturers are well aware that the TTY function is completely useless, so they do not indicate it in advertising videos and on posters. Even the instructions for the smartphone don’t write a word about it. How does an ordinary user know about it?

Thanks to the rapid development of 3G/4G networks and high-speed Internet via Wi-Fi, there is no need for a TTY. Therefore, various programs for live communication such as Skype or applications for social networks have replaced the teletype, and for a long time. Well, now you know what kind of function is the teletype mode on the phone.

Mode operating conditions

You cannot use a TTY unless the following conditions are met:

• Support of the standard by the cellular operator;
• Availability of specialized equipment to implement the option – adapter.

You can buy an adapter at a specialized store. On the Apple equipment website there is special equipment for iPhones.

In this review, we discussed what this is - a teletype mode on a phone, what features it differs from and what it is used for. Now you can enable the function if necessary and use it in appropriate cases - do not forget to check the functionality with the operator and purchase the appropriate equipment.

Hearing problems

Users, when searching for the necessary settings in their mobile device, sometimes come across an unclear abbreviation TTY , or the inscription “Teletype mode”, which also does not clarify the situation.

A typical mode sign can be found directly in the status bar of the smartphone. What is a teletype in a smartphone? Why is it used? How to use this mode yourself?

Unfortunately, some people have difficulties with hearing , both congenital and acquired. This does not mean that such people should be limited in their options for connecting via smartphones.

It is for such users new technologies are often invented, making their communication more convenient.

Before proceeding with this function, it is worth considering the history of the invention with the same name.

Story

The development of teletypes was due to a series of inventions by engineers such as Royal House, David Hughes, Edward Kleinschmidt, Charles Cram, Emile Baudot and Frederick Creed. ..

The immediate predecessors of the teletype are ticker machines, which began to be used in the 1870s to display text transmitted over wires. A specially designed telegraph machine was used to send stock market information over telegraph wires to the ticker machine.

Links

• Teletype
  - article from the Great Soviet Encyclopedia.
• [www.w1hkj.com/Fldigi.html Fldigi] - Digital modem program for Linux, Free-BSD, OS X, Windows XP, NT, W2K, Vista and Win7 (eng) - Allows you to receive teletype from radio broadcasts

K:Wikipedia:Articles without sources (type: not specified)

Money transfers

The ability to instantly transmit messages over long distances opened the door to new types of businesses. According to the Great Soviet Encyclopedia, money has been sent by mail in Russia since 1781. In the 19th century, a modernized service appeared - postal transfers. It was not the bills themselves that were sent by mail, but special coupons that the recipient brought to the post office in order to pick up the cash. And it was forbidden to put banknotes in envelopes.

The extensive telegraph network in the United States allowed Western Union to begin providing telegraphic money transfers in 1871. The service turned out to be so popular that after just five years the company had completed 37,190 transfers worth $2.6 million, with an average transfer amount of $70. This is more than $56 million in 2016 prices. This service is now the main business for 262 million money transfers between clients, totaling $82 billion.

In the Soviet Union, money transfers were one of the important public telegraph services.

Telegraphic transfer form, USSR

Windows Phone devices

But with devices on this platform, everything is not so simple. It seems like a useful option is TTY in Windows Phone. What kind of smartphones are these without support for this option? Only the most advanced models are equipped with it. Here we can see a policy that cares more about its own income rather than about the user’s comfort. In fact, all devices on the Windows platform support teletype. It’s just that not everyone has it implemented in software. You can simply update the shell to the latest version, then this option should appear. However, there is also an obstacle: Microsoft has blocked the ability to update for older devices. And smartphones are not computers. Simply changing the operating system will not work. It's easier to change your smartphone. Moreover, the mobile platform from Microsoft is dead. The company itself publicly stated this.

Russia

In 1832, Paul Schilling, a Russian diplomat and historian, a participant in the Patriotic War, assembled an electromagnetic telegraph in St. Petersburg. Telegraph technology was based on the effect of deflection of a magnetic needle when interacting with an electromagnetic field from electrical wires. The background to this invention is extremely interesting: Schilling, five years earlier, had exploded underwater mines using electric current running through rubber-insulated wires.

To transmit one letter, three or four keys were pressed simultaneously. On the receiving apparatus, the conductors were connected to an electromagnet with a magnetic needle hanging above it, which turned when current flowed through the wire. Along with the arrow, a signal circle turned, black on one side and white on the other. Schilling developed a special code so that six arrows with signal circles would be enough to convey all the letters of the Russian alphabet. In a minute, ten characters could be transmitted over eight wires.

Schilling six-hand multiplier telegraph apparatus

In 1841, the first regular telegraph line opened, connecting the Winter Palace with the General Staff. This happened after the death of the inventor in 1837. But Schilling’s work was continued by Boris Semyonovich Jacobi, who by 1839 created several systems of telegraph apparatus, including a writing one.

In Boris Jacobi's writing telegraph, an electromagnet drove a pencil, leaving notes on a moving porcelain board. The device operated on the line Winter Palace - General Headquarters - Tsarskoe Selo. The recordings were difficult to decipher, which the inventor was not happy about.

By 1845, Jacobi had made a pointer synchronous apparatus with a horizontal dial, an electromagnetic drive and a keyboard, and by 1850, the world's first direct-printing telegraph. Only the government considered his work a military secret, which is why few people knew about the project.

B. S. Jacobi pointer telegraph apparatus with a vertical dial

In 1844, Jacobi was invited to build a telegraph line along the railway between Moscow and St. Petersburg. The inventor proposed to include an auxiliary battery in the line, which would allow transmissions if the insulation of the underground cable was damaged. A similar device was then used when laying a cable along the bottom of the Atlantic Ocean.

Unfortunately, Jacobi did not complete the line; the order for the construction of a network of telegraph lines was eventually received by the German company Siemens & Halske.

Pointer telegraph apparatus "Siemens & Halske"

In 1852, the first telegraph station was founded in Moscow in the building of the St. Petersburg-Moscow Railway station. Its history begins on October 1 of this year. In 1869 the station moved to Myasnitskaya Street.

By the end of 1855, the telegraph covered the cities of Central Russia and began to connect the country with Europe. In 1880, several types of telegraph devices and teletypes were used in Russia.

Central telegraph on Myasnitskaya street, around 1900

From USA to Europe via Alaska

The American Western Union decided to take a different route - through Alaska. In 1867, Russia sold Alaska to the United States for $7.2 million, and Western Union received the right to build lines along military and postal routes, including railroad lines.

The project for laying a cable through Alaska was called the “Russian-American Telegraph”. It envisioned a line from San Francisco in California to Moscow through Oregon, Washington Territory, Columbia, Alaska, the Bering Strait and Siberia, connecting the United States and Europe.

Although the project failed, it gave impetus to the development of all the territories through which it passed.

Telegraph line in Alaska