[What should I do if the keys of a landline phone are locked] What is the use of the English letters next to the numbers of the landline keys
What should I do if the keys of the fixed phone are locked
The phone is locked, usually there are two situations:
One is Some telephones with locks have a mechanical lock behind the casing, which can fully lock and fully open the keypad lock. In this case, it can be opened with a key. If you can’t find the key, you can connect the two internal wirings, based on the principle of being able to dial.
The second is the dial-up circuit failure. Including dial IC damage and dial tone output circuit failure. The latter is mostly a triode problem
What is the use of the English letters next to the numbers on the fixed-line keys
On many telephones On the buttons on the machine, except for “O”, “1”, “*”, “#”, there are no letters on the other buttons, and there are three letters on the other buttons, and there are no two letters “Q” or “Z” in these letters. . Why is this?
This is a trace of telephone history. Before the touch-tone telephone, the telephone was a rotary, and there were 10 round holes on the dial of the telephone, representing 0-9. In order to make the phone number easy to remember, the telephone company assigns letters to each number, so people can change a person’s phone to use the letters they are used to to memorize, for example, the first two digits of the phone number of “Charleston” are ” 2-4″, it can be written as “CH”. Of the 10 round holes, the “0” is usually used exclusively for dialing to the operator, and the “1” is usually the signal for dialing to the international telephone company, leaving only 8 numbers to be assigned letters. Allocating 3 to each number, which uses up only 24 letters of the alphabet, so the least commonly used “Q” or “Z” is not used. Although rotary dial telephones are now retired, many touch-tone telephones retain the habit of placing three letters on each numeric key. Of course, this is not always the same. Now there are many telephones, and “Q” is placed on the “7” key, and “Z” is placed on the “9” key, so that there are 4 numbers on each of these two number keys. letter.
Tips for using landline phones
1, how to delete the wrong digit after pressing the wrong number Numbers
I believe that many people will encounter a problem when using fixed telephones: when dialing a very long number, when the number is halfway through, suddenly press the wrong key, which At times, you can only put down the microphone and dial it again from the beginning, and when you are often impatient, it is easy to dial the wrong number later.
Experience: In fact, the correct dialing method should be: in the pre-dialing state (ie, do not pick up the microphone, directly press the number key), when the input is wrong, you can press “Delete/R”, you can have The number is deleted one by one. After the input is completed, press the “Redial/Callback” key once to automatically start the hands-free dialing of the number.
2, Callback of incoming calls
Sometimes calls are missed and need to be redialed, if recorded on paper It would be cumbersome and time consuming to dial back.
Experience: (phone with caller ID), press “” to find the number to be called back, press Redial/Call back” key for 2 seconds, it will add “0” before the caller number before dialing out.
