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DEFINITY Made Easy Tools
Issue 2, November 2000
DEFINITY Hardware
The TN788B Multimedia Voice Conditioner circuit pack is used in conjunction with the TN787F/G multimedia interface circuit pack to provide service circuit functionality for the MMCH feature. This feature provides both voice and multimedia data service between multimedia complexes (endpoints).
The TN788B is the audio processor for the Px64 multimedia conference bridge. The TN788B contains 8 digital signal processors; 4 for encoding and 4 for decoding. Each encoder/decoder pair is assigned to a Px64 endpoint to process its audio channel. Connection to and from the endpoint's audio is by way of a TN787F/G multimedia interface port. This connection is through the TDM bus timeslots.
Each of the 8 digital signal processors communicate with the main on-board processor through 8 individual Dual Port Random Access Memory (DPRAMs). No Read Only Memory (ROM) is available on this circuit pack; the DPRAM is used for program download.
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| Copyright� 2000 Avaya Inc |
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