TIA-1001:2004

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Transport of TIA-825-A Signals over IP Networks

Published By	Publication Date	Number of Pages
TIA	2004	36

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Category: TIA

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Description

This Standard defines the requirements for the reliable
transport, using Text Relay, of Textphones using TIA-825-A signals,
and other signaling associated with Baudot TDDs, across IP networks
that connect two or more PSTNs (Figure 1). The Standard describes
the functionality of Text Telephony Gateways, which connect between
the PSTN and an IP network. This Standard also provides the ability
for switching between TIA-825-A signals and voice during a call.
The Standard defines Text Relay for TIA-825-A to TIA-825-A
Textphone connections with Voice Band Data (VBD) being supported
only as a means to support connections that include at least one
non TIA-825-A terminal or one gateway that does not support
TIA-1001 or ITU-T Recommendation V.151.