[Standards] UPDATED: XEP-0301 (In-Band Real Time Text)

Gunnar Hellström gunnar.hellstrom at omnitor.se
Mon Jul 9 15:24:30 UTC 2012


On 2012-07-09 17:05, Mark Rejhon wrote:
> I propose a shorter section added to Interoperability, since it is 
> listed as one of the Requirements (TTY alternative) in Section 2, so 
> it is very prudent that I expand on how it's accomplished, by adding 
> this section to Interoperability:
>
>     *8.3 TTY and Textphones*
>     *Real-time text is implemented in assistive telephone devices that
>     operate on the PSTN (e.g. TTY in North America, textphone in
>     Europe), using various text telephone modulation protocols such as
>     those specified in ITU-T V.18 and its annexes (e.g. Baudot, DTMF).
>     It is possible to implement gateways between them and XEP-0301
>     based real-time text, and can be combined with an audio protocol
>     such as XEP-0166 (e.g. for Voice Carry Over). *
>
>
Good. Just one little modification. My view is that "textphone" or "text 
telephone" is the generic technical term for these devices. Then every 
country has their name for it. USA and Canada calls it TTY and mean then 
the TIA-825A equipped type. UK calls the same "Minicom" after the 
product name of the same. Italy calls their EDT equipped ones DTS . 
Switzerland calls them Schreibtelefon. France had Minitel, Sweden has 
Texttelefon, Denmark has Skrivtelefon, Holland has Schreibtelfon ( I think).
Summary. Use TTY for the North American type and Textphone as the 
general term.  I usually name TTY and Nrth America because Americans 
usually do not even realize that "textphone" is a wider used term for 
the same thing.

I also recommend that we do not introduce the old term "Voice Carry 
Over" that will raise new questions among the ones not knowing 
accessible communication history.

Therefore, I suggest some small modifications resulting in this:

    *8.3 Textphones (Including TTY)
    *
    *Real-time text is implemented in assistive text telephone devices
    that operate on the PSTN (called TTY in North America),
    using various text telephone modulation protocols such as those
    specified in ITU-T V.18 and its annexes (e.g. Baudot, DTMF). It is
    possible to implement gateways between them and XEP-0301 based
    real-time text, that can be combined with an audio protocol e.g.
    XEP-0166 (e.g. for alternating audio and text).
    *


Gunnar
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