Avaya sent a G250 Media Gateway with Communication Manager 3.1; two 9600 series one-X IP phones, the 9620 and 9630, with 16 MB of Flash memory and 32 MB of RAM, and two current-generation 4610SW IP phones for comparison. The one-X brand aims to provide a consistent experience on various phone models, from the 9600 and Quick Edition series (see Avaya one-X Quick Edition) to Avaya soft phones and their Nokia Mobile Client.
Unlike Avaya's 4610SW IP phones, the 9620 and 9630 come with the G.722 codec, providing wide-band audio with improved tone and higher volume speech. The codec, an ITU-T standard, converts audio signals at a rate of 16 KHz sampling, twice the rate of conventional telephony interfaces. The clear, high-quality voice calls rival those of Polycom's Siren codec (G.722.1). Both new models have better tone quality and speech volume than Avaya's 4610SW IP phones.
To get the phones' full benefit, you may need to upgrade your IP PBX. Communication Manager 3.0 supports the new H.323 IP phones, but the enhanced codec requires version 3.1.
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