What Are Telecommunication Feature

What is a PSTN in telecommunication?

A Public Switched Telephone Network, or PSTN for abbreviation, refers to a telecommunications network which allows subscribers at different sites to communicate by voice. This is also knownas the plain old telephone service (POTS) . The features of a PSTN are as follows.Subscribers can be connected by entering telephone numbers.The existing connections are primarily used to transmit speech information.After hanging up the connection is closed and the resources used become available to other subscribers.The term public switched telephone network is primarily used for public landlines. With traditional analogue landlines speech is transmitted analogue, a ISDN network transmits speech information digitally.

What kind of job can I have by studying Telecommunications and Electronics Engineering? (And some name of companies and post)?

G'day,As you've posted this question in the Telecommunications area, I'll focus on that industry. The most appropriate role would be a Network Engineer.  There are typically 3 different specialisations for this type of role, but that is often dependent on the size and structure of the company."RF or Cellular" Network Engineer - this role deals with the design and optimisation of cellular base stations and networks.  It's all about having a good understanding of wireless communications and the environment it is being used."Transmission" Network Engineer - this role deals with the design and optimisation of the backhaul transmission network.  This role deals with a mixture of point-to-point wireless and wired communication links, and focuses on providing the required bandwidth and network resilience (i.e. fault tolerance)."Exchange" Network Engineer - this role deals with the design and optimisation of the PSTN (i.e. land lines and ISP connections).They may have different titles and you may have these 2 or all of these areas of responsibility merged into a single role.In Australia, the main telco's are Telstra, Singtel Optus and Vodaphone.  Some others that focus on ISP stuff are iinet, aarnet, etc.There are other non-Telco roles that EE's can also consider, such as automation/control systems, and electrical maintenance engineering.

Does Telecommunications means Internet?

Thanks for the A2A.Telecommunications includes Internet communications, but it is actually a much broader term.For instance, we have mobile phones that are not connected to the Internet, but they are still connected to a mobile network.

What is this telecommunications device by Phillips?

After some searching I discovered that this is pictured here as the Philips-Nec SOPHO IPC 100 sometimes marketed as the Nec xn120http://www.infobox.bg/demo_files...http://www.mactelservices.co.za/...snipNEC XN120 / PHILIPS IPC100 (PABX) : Launched in 2006, these ground breaking new systems are the result of a technological collaboration between NEC & PHILIPS, two of the largest names in global consumer electronics. This partnership brings together the best of Asian & European telecomm technology in an affordable, sleek package that can be tailored to your exact needs.Streamlined and packed with the absolute latest in small to medium business PABX technology, these feature rich systems have broken all expectations regarding PABX systems in their class.Their modular design means that clients requiring an initially small & simple system, can start out with the lowest possible costs, but are not bound to a small system as their needs grow. With a minimum configuration of 3 telephone lines, and 8 extensions, and a maximum configuration of 27 telephone lines and 72 extensions (and that before you count ISDN & SIP digital lines) this system has just about every business covered, yet allows you to only pay for what you need, as you need it.Add to this the potential for a built in talking automated attendant, and full voicemail services for all systems users, these PABX systems already have the market cornered, even before you factor in the outstanding reputation for reliability that they have built over the last few years.Another valuable addition is the battery backup options, that unlike a typical UPS system, can keep the system running for hours & even days depending on your specific requirements. "Load Shedding" is a thing of the past for our systems.

Is the field of telecommunications dead and boring? And why is that?

Personally, I am truly, truly staggered when I hear people imply that the telecommunications industry is in decline.  This cannot be further than the truth.In fact the ubiquity of telecoms positions the industry closer to an industry such as banking where everyone knows that it is there but few on the outside really appreciate how the mechanics of it work.  What we do might not excite the average person on the street but the industry tackles almost insurmountable challenges time and time again, our work changes the world and enables new forms of business and human interaction and it is intellectually difficult which means that there will be very well-paid work in this sector for the foreseeable future.Investors look at the dwindling profit margins and see problems but the other side of this is our increasingly advanced patterns of consumption.In 1990, we could expect that a typical, affordable domestic data connection might offer about 10kbps of bandwidth via dial-up.In 2000, speeds of over 1mbps became achieveable with DSL and cablemodem.In 2010, speeds of 100mbps over fibre were possible (both with FTTP and FTTC by using VDSL/DOCSIS3 for the last mile).Think about that for a second...If the speed of aeroplanes followed that trend for a decade, it would only take three minutes to fly from London to New York.We have not only been making this kind of progress for a generation, we have been doing it while keeping the price to the end user roughly the same.No-one who is really familiar with our industry would really believe that it is dead and boring.  It is just that most people are not interested and don't understand what we do.

What is a fibre optic cable, and what are the features of fibre optics?

An optical fiber cable is a type of cable that has a number of optical fibers bundled together, which are normally covered in their individual protective plastic covers. Optical cables are used to transfer digital data signals in the form of light up to distances of hundreds of miles with higher throughput rates than those achievable via electrical communication cables. All optical fibers use a core of hair-like transparent silicon covered with less refractive indexed cladding to avoid light leakage to the surroundings. Due to the extreme sensitivity of the optical fiber, it is normally covered with a high-strength, lightweight protective material like Kevlar.Optical fiber cable is widely used in fiber optic communications.Compared to wired cables, fiber optic cables provide higher bandwidth and can transmit data over longer distances.Fiber optic cables support much of the world's internet, cable television and telephone systems.Fiber optic cables carry communication signals using pulses of light generated by small lasers or light-emitting diodes (LEDs).The cable consists of one or more strands of glass, each only slightly thicker than a human hair. The center of each strand is called the core, which provides the pathway for light to travel. The core is surrounded by a layer of glass called cladding that reflects light inward to avoid loss of signal and allow the light to pass through bends in the cable.To understand how a fiber optic cable works, imagine an immensely long drinking straw or flexible plastic pipe. For example, imagine a pipe that is several miles long. Now imagine that the inside surface of the pipe has been coated with a perfect mirror. Now imagine that you are looking into one end of the pipe. Several miles away at the other end, a friend turns on a flashlight and shines it into the pipe. Because the interior of the pipe is a perfect mirror, the flashlight's light will reflect off the sides of the pipe (even though the pipe may curve and twist) and you will see it at the other end. If your friend were to turn the flashlight on and off in a morse code fashion, your friend could communicate with you through the pipe. That is the essence of a fiber optic cable.Sources:How does a fiber optic cable work?What is an Optical Fiber Cable? - Definition from TechopediaIs Fiber Faster Than Traditional Cables? Learn All About Fiber OpticsElectrical, Data, Voice & Network Solutions, Cable Installation