Diva Hight Definition (WB, Wide Band) Audio
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+===================================================================+
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| HD Audio (Hight Definition Audio) |
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+===================================================================+
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+-------------------------------------------------------------------+
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| Supported HD Audio vocoders |
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+-------------------------------------------------------------------+
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Diva provides support for following HD Audio vocoders:
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g722, ssiren7 siren14 and slin16
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+-------------------------------------------------------------------+
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| Supported Diva Hardware |
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+-------------------------------------------------------------------+
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HD Audio support is provided by:
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Diva 4PRI PCI
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Diva 2PRI PCI
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Diva 4PRI PCIe HS
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Diva 2PRI PCIe HS
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Diva 1PRI PCIe HS
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Diva 8PRI PCIe FS 4LANE
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Diva 4PRI PCIe FS 4LANE
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+-------------------------------------------------------------------+
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| HD Audio over ISDN support |
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+-------------------------------------------------------------------+
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To activate support for HD Audio please allow all or one of HD Audio
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codecs for one or more CAPI controllers. You can do it by Diva WEB
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configuration or by edit of 'capi.conf'.
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Diva hardware will use BC/HLC/LLC method to agree on HD Audio
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format with opposite side. In addition Diva hardware will
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perform analysis of B-channel data to determine if HD Audio
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format is signaled in band.
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Dependent on this procedire Diva will use HD Audio format
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or change to G.711 if HD Audio is not supported by opposite side.
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Diva hardware will always convert media to one requested by chan_capi format.
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Following conversions are performed automatically:
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G.711 <-> HD Audio in case chan_capi uses HD Audio but opposite side not
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HD Audio <-> G.711/GSM/... in case opposite side uses HD Audio but
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chan_capi uses other codec
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Examples of HD Audio operation:
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G.722 <-> SLINEAR16
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G.722 <-> siren14
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G.722 <-> siren7
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G.722 <-> G.722
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Using automatic convertion this is possible always use HD Audio on internel (IP) network and do not case
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about used on the line (ISDN) format.
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+-------------------------------------------------------------------+
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| HD Audio support for IP conference endpoints |
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+-------------------------------------------------------------------+
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To activate HD Audio support for IP conferencing please add one or
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mode HD Audio codecs to codeclist of capi command 'resource'.
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Please read README.media for details on 'resource'
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+-------------------------------------------------------------------+
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| Conferencing between HD and NB Audio endpoints |
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+-------------------------------------------------------------------+
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In case of conference with HD and NB (Narrow Band) Audio endpoints
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the quelity of HD endpoints is preserved
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