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Telecommunications Industry Association , 10/29/2002
Publisher: TIA
File Format: PDF
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Introduction
This service description document details the Inband Signaling (IS) protocol between Transcoder/Rate Adapter Units (TRAUs) for speech traffic channels for the Tandem Free Operation (TFO) of speech codecs, sometimes also termed "Vocoder Bypass". It is applied to the cdma2000 standards.
Annex A is mandatory and defines the capability and requirements used in the development of this TFO standard.
Annex B is mandatory and describes the general IS protocol, which is applicable to TFO specifications for all systems (e.g., TDMA, cdma2000, GSM and UMTS)
Annex C is informative and gives the rules for In Path Equipment (IPE). It is identical for all systems (e.g., TDMA, cdma2000, GSM and UMTS).
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