High definition VoIP, what‘s old is new again. Just as high definition television provides a clearer and more vibrant image, high definition VoIP offers a high quality, crisp sound.
Wideband audio is not a new technology it has been around in one form or another since long before the International Telecommunications Union released G.722; a standardized version of wideband audio, first used by radio broadcasters to provide high quality audio from remote locations.

G.722 extends the normal frequency range of traveling communications circuits, resulting in a higher quality voice transmission. Wideband audio functions can easily be employed on a VoIP system by integrating G.722 technology supplemented with various audio codecs. HD VoIP is especially valuable when deployed in conjunction with video conferencing as the user experience is positively influenced by the superiority of the audio signal. Businesses experience the enhanced benefit of HD VoIP when deployed with other unified communications platforms, such as multi-office video conferencing. With an enhanced audio quality participants no longer struggle to recognize the individual speaking and are no longer confused by muffled or inaudible background noise.

The most noticeable benefits of VoIP in high definition are; clearer overall sound quality, faster voice recognition, an ease in the ability to distinguish between one or more speakers, increased productivity, less fatigue on business calls and a better understanding of the conversation when faced with background noise or other impairments.

HD VoIP transmits more than double the range of audio frequencies available on a regular telephone system. However, it should be understood that despite providing realistic sounding audio, HD VoIP will can not provide the full spectrum of audio sounds that a live person-to-person conversation will provide. HD VoIP transmits frequencies from 50Hz to 7000Hz at a range of almost 7Hz; the human ear maintains the ability to detect frequencies ranging from 20Hz to 20,000Hz. HD VoIP is still clear enough though that it can seem like that both the speaker and the listener are in the same room.

Currently HD VoIP technology, although available for home users, is primarily recommended for corporate use. As mentioned earlier the main benefit of wideband audio is the ease of listening and reduction of fatigue when used in a business conference platform. Lengthy calls, particularly those with multiple speakers, essentially become less tiresome resulting in heightened productivity. HD VoIP has also been reported to improve a companies image and rapport when used with client communications.

In order to receive true HD quality, it is important to be sure that your VoIP phone is HD-Capable and not just HD-Compatible. Businesses must also analyze their telecom connections and services, as well as be certain that their network is sufficient in handling the increased bandwidth requirements of various codecs. Enterprises are strongly advised to contract with a qualified HD-capable hosted VoIP service to ensure a smooth and successful transition.