There are situations when you got a call, for a good reason you could not pick up the phone, and the number on the screen is unfamiliar. You are curious about who called, but it is not possible to call back, because everyone has heard about fraudulent calls and, as a result, the disappearance of certain sums of money from the account.
It is necessary
Guidelines for defining dialing rules, detailed listing of incoming numbers
Instructions
Step 1
First, we will consider the general rules for dialing a number, when you know the basic information, it will be easier for you to navigate in order to find out where the call is from. When dialing an international and long-distance number from a landline phone, you need to make the following dialing: 8 - dial tone - then the area code - and the phone number - for long-distance calls and 8 - dial tone - 10 - country code - area code - phone number.
Step 2
After analyzing this information, you can easily determine the territorial origin of the call to your home phone. When calling a cell phone number for long-distance dialing, use the combination +7 - city code - phone number, for international calls dial + country code - city code - phone number.
Step 3
Now that you know the basic combination of numbers when dialing a number, let's move on to determining the country code. In any telephone directory or on the Internet, we find a list of country telephone codes, referring to the above dialing scheme, determine the country or, similarly, the city from which the call was made.
Step 4
There are times when the caller hid his cell phone number. They often hide numbers in order to extortion, prank or intrigue a person. There is a way to calculate the joker - this is the automatic customer service system, its number is 0880. Contact the specified number, the automatic voice will explain in detail the sequence of actions, specify the password, and in the menu for removing / adding services add the service - Internet customer service.
Step 5
The next method is to order a service from a telecom operator that allows you to determine any numbers, including hidden ones, order it once and in the future the number will be determined automatically.
Step 6
One of the options for defining a call is to order a detailed printout of incoming numbers to your phone, in this case, indicate all the numbers of the callers, including those that were hidden. If you are harassed on a landline phone, and there is no way to identify the caller, your telecom operator provides such a service as "malicious call identification", certain numbers are dialed, detailed instructions are provided by the communications center, through which the caller's phone is easily installed.
