ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

Choosing VoIP Audio Codecs

Updated on September 4, 2012
Choosing a VoIP Codec
Choosing a VoIP Codec

Importance of Audio Codecs

The selection and usage of audio codecs is one of the most important configuration parameters in a VoIP system. There is no single solution because every network is different and every business has varying needs. One of the benefits of VoIP however is that it can make use of several high-quality audio codecs in order to deliver real life speech quality over the telephone.

The traditional PSTN system uses something known as the G .711 codec. Samples of voice are taken at 8 kHz and is therefore imperfect for audio transmission. But over the years, we have gotten used to what a human being's voice sounds like over the telephone even though we very often have to repeat ourselves in or to to differentiate between a variety of sounds. This is one of the reasons why you have difficulty spelling out your name to another person over a traditional telephone system. But even this inconvenience isn't too great. The problem arises however during conference calls when it becomes difficult to sometimes differentiate one person from the other. In order to capture a greater range of frequencies, it is important to use an audio codec that can deliver.

One very popular VoIP codec is known as G .722 which is an evolution over the traditional PSTN system codec The power of the G .722 codec lies in the fact that it adopts a variable rate of compression depending on your bandwidth which means that you can use it even when your Internet connection is slow. In addition, there are several variations on the G .711 codec that are specifically designed for VoIP and that are also supported by a large number of SIP providers. Most of the time you will not need to fiddle around with the audio codec settings. The only difference you'll notice is that when talking to your own employees using an "all VoIP" connection, the voice will be crystal clear. You'll wonder how you ever got along with using a puny 8 kHz audio codec in the first place!

Contact a Los Angeles PBX ITSP to find out what audio codecs they support and whether or not you can make calls in HD voice quality when talking to your own employees using the VoIP system. It is not possible to use a higher-quality codec if the other person is using a regular phone because everything has to drop down to telephone quality. But if you're talking to another person using VoIP, it is possible to use the high-quality codecs that we've been referring to. You can get started with a hosted VoIP PBX plan almost immediately. Get in touch with you SIP provider to find out how.


    0 of 8192 characters used
    Post Comment

    No comments yet.


    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, 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:

    Show Details
    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 or domains, for performance and efficiency reasons. (Privacy Policy)
    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)
    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.
    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)