2024-08-05 05:41:11
Have you ever wondered how it happens when your mobile phone rings? How at the speed of a rocket, you are able to talk to a person sitting thousands of kilometers away in minutes. Also, in today’s time video calls can be made. One can easily talk to a person sitting thousands of kilometers away from one country on a video call. However, there is a whole system behind this. Let us understand this system in simple words.
How is the call made?
There is a whole system behind any call. This system is spread across the country and the world. The whole world is connected to this system.
Dialing a number: When you call someone, you dial their mobile number. This number is a unique set of numbers that identifies that person’s mobile phone. Every country has a country code to divide mobile numbers, for example India’s country code is +91, when you make a call, +91 is automatically added before it.
Connecting to the network
When you enter the contact number and press the dial button, your phone connects to your mobile network such as Airtel, Jio, Vodafone or BSNL and then your SIM sends a signal to the mobile towers in your area.
Transmission of signals
Your mobile tower then sends a signal for this call by converting your call into a fixed frequency, called radio waves. This signal travels in the air as radio waves.
Reaching the tower: This signal reaches the mobile tower of the area you have called. These towers are part of a huge network that is spread across the world.
mobile tower call
The tower transmits your call to the mobile tower of the person you are calling.
Phone ringing: When the signal reaches that person’s phone, their phone starts ringing.
How do you get a call
Connection to the network
Your phone is always connected to your mobile network, even when you’re not making a call.
Getting a Signal When someone calls you, their phone sends a signal that reaches your mobile tower.
Information to the tower The tower notifies your phone that you are receiving a call. Your phone starts ringing, and you can answer the call. All this happens so fast that you do not even realize it. This entire process happens in a few seconds. All this is possible because mobile networks are very fast.
Different rules for calling and data
2G network is the oldest. It is very slow as compared to today’s networks. It was mainly used for making calls and sending SMS.
3G Network
When the 2G network was updated, it came to be known as the 3G network. This networking system was much faster than 2G. With its help, internet browsing and video calling was easy. But the download and upload speed on this network was still slow.
4G and 5G networks
4G network changed the world of internet. It became very fast. We could watch videos, download songs, and play online games without any interruption. 5G network is the newest and fastest. It is so fast that we can download large files in seconds, stream high-quality videos, and multiple devices can use the internet simultaneously. All these networks use radio waves. Your phone has a SIM card that catches these waves. These waves carry data to your phone and send it back. As the generation of the network increases, the capacity of the waves also increases.