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What does TRAU mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: TRAU.

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TRAU

Associated Transport Line

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What does TRAU mean?

TRAU
Transcoder and Rate Adaptation Unit, or TRAU, performs transcoding function for speech channels and RA for data channels in the GSM network. The Transcoder/Rate Adaptation Unit is the data rate conversion unit. The PSTN/ISDN switch is a switch for 64 kbps voice. Current technology permits to decrease the bit-rate. Since MSC is basically a PSTN/ISDN switch its bit-rate is still 64 kbit/s. That is why a rate conversion is required in between the BSC and MSC Transcoding is the compression of speech data from 64 kbit/s to 13/12.2/5.6 kbit/s in case FR/EFR/HR speech coding.

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