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Cisco firmware update to bring HD voice to SMB phones
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Cisco is set to standardize the high-definition G722 codec on its main small business desk phone with a firmware update, signaling another shift toward HD voice for Cisco and the telephony equipment industry. Cisco is planning to upgrade all of its small business phones to HD voice by year's end, with the former Sipura team playing a major role in the transition.
Cisco's main small business phone, the SPA525G, was designed with HD voice in mind, the company said, as changes were made to the speakers and microphone to better support wideband codecs. Once the firmware update is complete, users will be able to get HD quality voice when connecting with a user of another HD-enabled handset, such as ones made by snom, Polycom and Astra.
For more:
- see the Voxilla article here
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Comments
Posted by Renaud | May 28, 2009 - 6:33am
G722 is a 7kHz codec. Good and old! It has been designed about 20 years ago. How strange that you are making NEWS such an old standard. Is this an archeology newsletter? Speaking of HD for G722 in 2009 is shocking. You could more accurately say that 7kHz is better than 4kHz, and especially better than the G711 codec of the seventies the way it is implemented in Northern America. You compare bad and less bad, not good and excellent.
The real reason for using G722 is not HD, it is its improved voice intelligibility over G711 and its cost effective implementation (old but good and stable ADPCM). Nothing fancy.
Many years have gone by since, and much higher quality can be achieved with the same bit rate.
[I have contributed to ITU-T speech codecs until 1993]
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