Ever wondered what actually is Telecom? What are its components? How they work? Read below for the same.
What is Telecom?
Telecommunications ("telecom") is a general term for a vast array of technologies that transmit and receive voice, data, and video information over varying distances through electronic means. The utilization of these networks and technologies varies greatly from organization to organization and may include:
Local, long distance, and toll-free voice traffic
Internet access
Video conferencing
LAN's and WAN's
Call centres
Converged networks (voice, data, wireless)
How do mobile phones work?
Mobile phones operate within a network based on services which are provided by Telecommunications Service Providers (TSPs). In short, mobile phones search for signals in order to operate. This is enabled through cell towers, which are cellular telephone sites where the antenna and electronic communications equipment are placed. Mobile phones convert our voice into an electronic signal, transmit it as a radio wave and convert it back into sound once it reaches another mobile phone. Since TSPs allow us to connect to other mobile phones through the cell tower which is the nearest to us, they always know our geolocation.
How does our device message 'talk' to other devices in the network?
Protocols like i2c and many more translate the text of our message into electronic signals, transmit it through the network and translate it back into text once it reaches another device.
What is Sim?
A subscriber identity module or subscriber identification module (SIM), widely known as a SIM card, is an integrated circuit that is intended to securely store the international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephony devices (such as mobile phones and computers). It is also possible to store contact information on many SIM cards, security authentication and ciphering information, temporary information related to the local network, a list of the services the user has access to, and two passwords: a personal identification number (PIN) for ordinary use, and a personal unblocking code (PUC) for PIN unlocking. It is always used on GSM phones. Normally, SIM card works on the frequency of 824 - 849 MHz to uplink and 869 - 894 MHz for downlink.
What is SMS and how it works?
SMS is a text messaging service component of most telephone, Internet, and mobile-device systems. It uses standard communication protocols to enable mobile devices to exchange short text messages.
Cell phones are always sending and receiving information through signals even when the phone isn't in use. The signals are sent and received from a cell phone tower or control channel. In order for the phone calls and messages to come through, the control channel needs to know which phone belongs to which phone number. Depending on the location of the cell phone, it will communicate with different towers as the user moves around the city, state, country and even the world. If the phone is unable to communicate with a tower, then it will not receive a signal and can't be used. The control channel maps the path for SMS or text messages. When a message is sent, it first must go through the nearby tower and then the SMS centre. The SMSC receives the message and sends it to the appropriate tower closest to the location of the cell phone and then to the destination. So what is the SMS job in the entire process? SMS formats the message in a way that it is able to travel to and from the town, and still be received by the cell phone. SMS also sends data associated with the message, such as the length of the message, destination, format and time stamp.
What is VoLTE?
Many of the Indians got introduced to VoLTE due to Reliance Jio. Till then, the only things we knew was the generations (1g, 2g, etc). A big thanks to Reliance Jio for letting us know this new technology.
VoLTE stands for voice over LTE and it’s more or less exactly what it says on the tin. It's voice calls over a 4G LTE network, rather than the 2G or 3G connections which are usually used. We tend to think of 4G as mostly being about downloading, streaming and web browsing, and indeed that’s primarily what it’s been used for so far, but it can also be used to improve calls.
What is the Internet?
The Internet is the global system of interconnected computer networks that use the Internet protocol suite to link devices worldwide. It is a network of networks that consists of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies.
What does the Internet do?
The Internet has one very simple job: to move computerized information from one place to another. The machines that make up the Internet treat all the information they handle in exactly the same way. In this respect, the Internet works a bit like the postal service. Letters are simply passed from one place to another, no matter who they are from or what messages they contain.
How does Internet data move?
It either moves through Circuit Switching or Packet switching.
What is circuit switching?
Suppose you want to move home from India to Japan and you decide to take your whole house with you—not just the contents, but the building too! Imagine the nightmare of trying to haul a house from one side of the world to the other. You'd need to plan a route very carefully in advance. You'd need roads to be closed so your house could squeeze down them on the back of a gigantic truck. You'd also need to book a special ship to cross the ocean. The whole thing would be slow and difficult and the slightest problem en-route could slow you down for days. You'd also be slowing down all the other people trying to travel at the same time. Circuit switching is a bit like this. It's how a phone call works.
What is packet switching?
Is there a better way? Well, what if you dismantled your home instead, numbered all the bricks, put each one in an envelope, and mailed them separately to Japan? All those bricks could travel by separate routes. Some might go by ship; some might go by air. Some might travel quickly; others slowly. But you don't actually care. All that matters to you is that the bricks arrive at the other end, one way or another. Then you can simply put them back together again to recreate your house. Mailing the bricks wouldn't stop other people mailing things and wouldn't clog up the roads, seas, or airways. Because the bricks could be travelling "in parallel," over many separate routes at the same time, they'd probably arrive much quicker. This is how packet switching works. When you send an email or browse the Web, the data you send is split up into lots of packets that travel separately over the Internet.
What is Telecom?
Telecommunications ("telecom") is a general term for a vast array of technologies that transmit and receive voice, data, and video information over varying distances through electronic means. The utilization of these networks and technologies varies greatly from organization to organization and may include:
Local, long distance, and toll-free voice traffic
Internet access
Video conferencing
LAN's and WAN's
Call centres
Converged networks (voice, data, wireless)
How do mobile phones work?
Mobile phones operate within a network based on services which are provided by Telecommunications Service Providers (TSPs). In short, mobile phones search for signals in order to operate. This is enabled through cell towers, which are cellular telephone sites where the antenna and electronic communications equipment are placed. Mobile phones convert our voice into an electronic signal, transmit it as a radio wave and convert it back into sound once it reaches another mobile phone. Since TSPs allow us to connect to other mobile phones through the cell tower which is the nearest to us, they always know our geolocation.
How does our device message 'talk' to other devices in the network?
Protocols like i2c and many more translate the text of our message into electronic signals, transmit it through the network and translate it back into text once it reaches another device.
What is Sim?
A subscriber identity module or subscriber identification module (SIM), widely known as a SIM card, is an integrated circuit that is intended to securely store the international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephony devices (such as mobile phones and computers). It is also possible to store contact information on many SIM cards, security authentication and ciphering information, temporary information related to the local network, a list of the services the user has access to, and two passwords: a personal identification number (PIN) for ordinary use, and a personal unblocking code (PUC) for PIN unlocking. It is always used on GSM phones. Normally, SIM card works on the frequency of 824 - 849 MHz to uplink and 869 - 894 MHz for downlink.
What is SMS and how it works?
SMS is a text messaging service component of most telephone, Internet, and mobile-device systems. It uses standard communication protocols to enable mobile devices to exchange short text messages.
Cell phones are always sending and receiving information through signals even when the phone isn't in use. The signals are sent and received from a cell phone tower or control channel. In order for the phone calls and messages to come through, the control channel needs to know which phone belongs to which phone number. Depending on the location of the cell phone, it will communicate with different towers as the user moves around the city, state, country and even the world. If the phone is unable to communicate with a tower, then it will not receive a signal and can't be used. The control channel maps the path for SMS or text messages. When a message is sent, it first must go through the nearby tower and then the SMS centre. The SMSC receives the message and sends it to the appropriate tower closest to the location of the cell phone and then to the destination. So what is the SMS job in the entire process? SMS formats the message in a way that it is able to travel to and from the town, and still be received by the cell phone. SMS also sends data associated with the message, such as the length of the message, destination, format and time stamp.
What is VoLTE?
Many of the Indians got introduced to VoLTE due to Reliance Jio. Till then, the only things we knew was the generations (1g, 2g, etc). A big thanks to Reliance Jio for letting us know this new technology.
VoLTE stands for voice over LTE and it’s more or less exactly what it says on the tin. It's voice calls over a 4G LTE network, rather than the 2G or 3G connections which are usually used. We tend to think of 4G as mostly being about downloading, streaming and web browsing, and indeed that’s primarily what it’s been used for so far, but it can also be used to improve calls.
What is the Internet?
The Internet is the global system of interconnected computer networks that use the Internet protocol suite to link devices worldwide. It is a network of networks that consists of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies.
What does the Internet do?
The Internet has one very simple job: to move computerized information from one place to another. The machines that make up the Internet treat all the information they handle in exactly the same way. In this respect, the Internet works a bit like the postal service. Letters are simply passed from one place to another, no matter who they are from or what messages they contain.
How does Internet data move?
It either moves through Circuit Switching or Packet switching.
What is circuit switching?
Suppose you want to move home from India to Japan and you decide to take your whole house with you—not just the contents, but the building too! Imagine the nightmare of trying to haul a house from one side of the world to the other. You'd need to plan a route very carefully in advance. You'd need roads to be closed so your house could squeeze down them on the back of a gigantic truck. You'd also need to book a special ship to cross the ocean. The whole thing would be slow and difficult and the slightest problem en-route could slow you down for days. You'd also be slowing down all the other people trying to travel at the same time. Circuit switching is a bit like this. It's how a phone call works.
What is packet switching?
Is there a better way? Well, what if you dismantled your home instead, numbered all the bricks, put each one in an envelope, and mailed them separately to Japan? All those bricks could travel by separate routes. Some might go by ship; some might go by air. Some might travel quickly; others slowly. But you don't actually care. All that matters to you is that the bricks arrive at the other end, one way or another. Then you can simply put them back together again to recreate your house. Mailing the bricks wouldn't stop other people mailing things and wouldn't clog up the roads, seas, or airways. Because the bricks could be travelling "in parallel," over many separate routes at the same time, they'd probably arrive much quicker. This is how packet switching works. When you send an email or browse the Web, the data you send is split up into lots of packets that travel separately over the Internet.
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