ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

VoIP Phones - Advantages of VoIP over PSTN

Updated on August 20, 2011

What are VoIP Phones?

In simple terms, VoIP stands for voice over internet protocol and if you remove protocol from this abbreviation, it is very simple to understand, it says voice over internet which means this application provides verbal communication over internet just like common cell phones and landline phones but it is getting very popular because of low cost bills and free of cost calls.

Around thirty years ago, Internet did not exist and all communication was conducted through telephone systems via the PSTN (public-switched telephone network) but now and, technological advancement has given birth to new gadgets and technologies which are quite useful to all of us and made us think to create new communication technologies for examples personal computers, mobile phones, and finally the Internet.

Today, we are seeing a big revolution in the field of communication where everyone is using computers and internet at the workplace and after business hours when there is free time, people communicate with others to exchange personal and professional data and sometimes to talk with more people at a time using applications like IP phone (Internet Phone) or NetMeeting and now with the advent of new communication technologies, we have started using real-time communication via PC and VoIP (Voice Over Internet Protocol).

With Voice Over Internet Protocol, anyone can make phone calls over the Internet. Some years back when VoIP started, people thought that IP telephony is just like a toy because the voice quality was poor as it was obtained via the Internet but now the time has changed and conversation done using VoIP has better voice clarity. For example, if your organization has a data network that has enough bandwidth, you could consider using this network for voice traffic. The most important factor or advantage gained by using VoIP system is cost saving of communications, because many calls between the various delegations of the company would go free of cost.

Actually the integration of data and voice via one network is an old idea but now more solutions have emerged from different manufacturers using multiplexers that allow the use of WAN data of companies for the transmission of voice traffic. It is really important to consider that the voice packet is different from the data packet and therefore it can be easily transported via a network that would normally be reserved for transmission of data, where costs are often on the lower side.

The latest emergence of VoIP along with lowering of digital signal processors or DSP's, which serve as key factors in the decompression and compression of voice, are elements, which have made possible the launch of this new technology.


Voip over PSTN
Voip over PSTN

IP telephony combines of 2 historically separate worlds, the transmission of data and voice. These carry data and voice previously converted between two distant points. This allows use of data networks to make phone calls and VoIP is one step further which is a single converged network that is responsible for all communication, whether it is data, voice, video, or any other type of information.

The voice over IP is not itself a service but it is a technology that allows voice to encapsulate in packets to be transported over data networks erasing the need for traditional circuit-switched PSTN lines. PSTN networks were developed to transmit voice conversations based on the concept of circuit switching or in much more simple words making a communication which requires establishment of a physical circuit as long as it lasts which in other words means that resources which are involved in the making a conversation or call cannot be used on another call until the first call is finished.

According to this, there are many advantages and features provided by VoIP and nowadays it’s service, quality, and speed is higher, but there are also one great disadvantage of security threat and it is also not possible to determine length of packet within the network until it reaches its destination and there is also a possibility of packet loss as IP protocol does not have a type of tool to retrieve the lost packet.


Comments

    0 of 8192 characters used
    Post Comment

    • soni2006 profile image
      Author

      Rajinder Soni 8 years ago from New Delhi, India

      Thanks a lot my friends, spinner, Veronica, and ocbill for your support and comments. In my next hub, I will write about how to determine the mechanisms which are used to ensure security of communications over Voice over Internet Protocol.

    • ocbill profile image

      ocbill 8 years ago from hopefully somewhere peaceful and nice

      VOIP is getting a lot better especially if it has an adapter to fit on your laptop or smart phone.

    • Veronica Allen profile image

      Veronica Allen 8 years ago from Georgia

      Very detailed. Good job.

    • profile image

      spinner2k8 8 years ago

      Wow lot more to this than I thought.

      ty

    working

    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, hubpages.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: "https://hubpages.com/privacy-policy#gdpr"

    Show Details
    Necessary
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy)
    Features
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Marketing
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Statistics
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)