Author Login | Popular Articles | RSS Feeds | Sitemap

Home | Communications


Telephone Systems - An Overview on Operating Principle

By: Rashmi Saxena

A Telephone system is a communication instrument that transmits any voice / sound signals to far by locations by converting these sound signals in waves and receives and reconverts the same waves into sound signals/ voice. The telephone network is extended universally so if you want to talk to someone, you simply need to pick up the telephone system and dial a few digits. You are instantly connected to that person and both of you can have a 2 way conversation.



Telephone systems were first introduced by Grahams Bell over one hundred years ago, but it is still works on the same operating principle. To make a call, we need to first pick up the handset. This causes the telephone system to be connected to a routing network. By pressing the numbers present on the touch tone keypad / frequency generator, signals are passed down via phone line to the routing station. Here, each digit is identified as a unique combination of tone frequencies. The specific combination of digits causes a signal to be passed to other telephone systems causing it to ring. When that telephone is picked up, connection between the two telephone systems is achieved.


The earpiece acts as speaker where as mouthpiece acts as a microphone. Sound waves from the user's voice cause vibration to a thin plastic disc present inside the telephone system. This causes change in the distance between the plastic disk and another metal disk resulting in a varying electric current which is passed through the phone lines. The receiver on the other phone picks up this electromagnet current. These magnets cause diaphragm to vibrate which produces the sound /voice that initiated the current. An amplifier in the receiver end makes it easier to hear. When one of the phones is hung up the electric current get broken resulting in dis-connection of the telephone systems

Article Source: http://www.articlesnatch.com

About the Author:
Specialize distributor of telephone Systems of several popular brands such as Nortel, Norstar Meridian, Avaya, Lucent, Toshiba, NEC, GN Netcom and Plantronics telephones and accessories. Quote for Telephone Systems

Tags: , , ,
| Print | Ezine Ready | |

Recent Communications Articles

  • Einpacken für Thailand By: Benjamin Brause - Weinachten steht wieder vor der Tür, und dieses Jahr hat man sich vorgenommen, die Winter Ferien anders zu verbringen. Nicht etwa im Schnee oder beim Ski fahren, sondern in einem warmen und herzigen Land: Thailand! Ja man hat soviel von diesem Land im fernen Osten gehört. Von seiner ausgezeichneten Küche, von den freundlichen Menschen, den interessanten Sehenswürdigkeiten und natürlichen von den atemberaubenden Inseln und Stränden!
  • Atlanta' Changing Weather Patterns - NASA By: PiBa - Welcome to the Thunder Dome Atlanta's Urban Heat Alters Weather Patterns As the heat builds during a blistering summer day in Atlanta, Georgia, you can almost hear the clouds overhead cry, "Let's get ready to rumble!" Urban and city growth has altered Atlanta's environment, setting up a uniquely altered world of weather. Because urban areas both produce and capture heat, a bubble or "urban heat island" forms around the city.
  • Science, Education, and the Subject of Beginnings. By: PiBa - True science is the search for truth. The single most important principle of science education is the one that instructs students to identify assumptions, use critical thinking, make logical deductions, and consider alternative explanations.
  • Free TV PC By: Sahara Jones - A recent field survey by NBC (NY Times, October 17, 2008) found free Internet streaming TV viewership to be gaining on conventional television - cable, satellite and terrestrial broadcast. By surpassing the quarter mark of total viewing of NBC’s TV episodes as yardsticks, NBC has shown that there’s no stopping Internet TV now. As with email, messaging, conferencing and telephony, Free TV on PC will soon become a standard internet feature.
  • How do experiencingyou identify when you are love? By: Pierre Basson - http://www.livingforloving.com We would all like to be loved more and feel full of love – isn’t that so. But I have a question for you. “How do you know for sure WHEN you are getting love?” in other words “How do you feel love, and how do you really KNOW you are having it?” Sounds like a funny question doesn’t it.
  • How do you recognize real LOVE? http://www.living4loving.com By: Pierre Basson - Does your partner walk around with a sticker on their head to tell you they’re in a loving or in a non-loving mood? Do you walk around with a badge on your chest that says “Please love me, I need it NOW!” http://www.living4loving.com So what does real love look like? How do you know when you get it? It appears so obvious but it’s not. Let’s check that out.
  • Interactive Model for Italian Telecommunication By: International Information Handling Services India - IIHSIndia.com is proud to announce the new report "The Italian Enterprise Telecommunications Market, Forecasts to 2013 (Interactive Model)" from its vast collection of informative market research reports. Interactive Model for Italian Telecommunication The interactive model provides the most complete and current guide to enterprise telecommunications spend in Italy. The model covers fixed line services, mobile services, internet connectivity services, managed data services and hosting services.
  • Reverse Cell Directory - Can I get one for free? By: Neil Huffman - Do you believe your spouse is deceiving you? Are there a bunch of calls to one number on his/her phone or bill? It's in our nature to want figure out the identity of the caller. Sometimes finding out the honest truth can be taxing. Particularly if all you have to go on is an unfamiliar number in your partner's phone. A reverse cell lookup might help. Is it only a confidant?
  • Comparison Between Samsung i8510 and Samsung Omnia By: Andrew Mathew - In this current age mobile phones are not just treated as gadgets of wireless communication. With the advancement of technological development, the mobile phone manufacturers are coming with innovative designed, elegant looking, technologically advanced and plethora of world-class features oriented mobile handsets. When it comes to contemporary mobile phone models that perfectly march with these criteria then of course the names of Samsung i8510 and Samsung Omnia come on the paradigm position.
  • Find Alarm Systems On The Internet By: Gnubas - This is one of many essays written on this fascinating subject. Each one tackles a variant aspect of alarm systems. When most people think of alarm systems, they think of the systems that alert the police when someone is breaking in, or will call through to the fire station if the house is on fire.

Comments

Search Ebay

Still can't find what you are looking for? Search for it!


Add to Google
ArticleSnatch Authors:
Member Login Sign Up Submit Articles FAQ Submission Guidelines Top Authors
For Publishers:
Most Popular Articles Ezine Notifications Article RSS Feeds Terms of Service
For Everyone:
Blog About Us Link to Us Contact Us New Stuff Link Directory Privacy Policy Sitemap Resources
Our Sites:
Free Magazines Book Your Hotel Stay Free MySpace Tools Massive Video Collection Broadband Speed Test
Click here to submit your free, permanent ads to TheFreeAdForum.com!

Submit Your link to the Open Link Directory Project

Copyright 2005-2008 MJE Sales, LLC. All Rights Reserved.
Proud member of the ArticleCkr Search Network Search Network!
ArticleSnatch.com is free for both publishers and authors to use and is supported entirely from advertising revenue.
Use of our service is protected by our Privacy Policy and Terms of Service.