TIA/EIA-829:2001

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Tandem Free Operation (TFO)

Published By	Publication Date	Number of Pages
TIA	2001	108

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Category: TIA

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Description

Introduction

This service description document details the Inband Signaling
Protocol between Transcoder/Rate Adapter Units (TRAU) for speech
traffic channels for the Tandem Free Operation (TFO) of Speech
Codecs, sometimes also termed "Vocoder Bypass". It is applied to
the North American standards TIA/EIA-136 and TIA/EIA-95.

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 Inband Signaling
(IS) Principle. It is identical for all systems (e.g., TIA/EIA-136,
TIA/EIA-95, GSM) and only updated to include the System
Identifications for TIA/EIA-136 and TIA/EIA-95.

Annex C is informative and gives the rules for In Path Equipment
(IPE). It is identical for all systems (e.g., TIA/EIA-136,
TIA/EIA-95, GSM).

Additional information