Polycom DOC2237A - Manual (Page 128)

Chapter 4 - Hardware Description
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Audio+ Module
The Audio+ Module performs audio compression, decompression, and
bridging. The Audio+ Module also performs transcoding between various
audio algorithms.
The Audio+ Module supports the following algorithms:
• ITU-T G.711 48, 56, and 64 Kbps
• ITU-T G.722 48, 56, and 64 Kbps
• ITU-T G.728 16 Kbps
• ITU-T G.722.1
• ITU-T G.723.1
• ITU-T G.729
• Siren7
• Siren14
The Audio+ module enables the usage of the Interactive Voice Response
(IVR) software component. Interactive Voice Response (IVR) for video
enables video and VOIP conference participants to use the IVR services for
interactive routing to conferences and to perform interactive operations from
their endpoint using DTMF codes. It stores the voice messages used with IVR
Services.
The Audio+ card also enables increased port capacity in Audio Only
conferences. Conferences can include participant handled by one card type -
either standard audio or the Audio+ family.