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Is the 16kbps rate included in the ITU standard for G.722.1?

April 26, 2017g.722.1 included itu rate standard

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Is the 16kbps rate included in the ITU standard for G.722.1?

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The 16Kbps rate is not part of the G.722.1 standard as defined by the ITU. Polycom signals the 16K rate in a proprietary way for H.323 and H.320. RFC 3047 does allow for non-standard rates and the 16K rate can be specified in a standard way for SIP. Polycom’s preference is that G.722.1 implementations enable the 16kbps rate, but this is not mandatory.