Thread Subject: Re: Subpart A Definitions-TTY-Action Needed

From: Deborah Buck
Date: Wed, May 02 2007 9:20 AM

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The Subpart A Workgroup will not take action on this term. We will await
input and recommendations from the Telecom Group.



-----Original Message-----
From: = EMAIL ADDRESS REMOVED =
[mailto: = EMAIL ADDRESS REMOVED = ] On Behalf Of Schomburg,
Paul
Sent: Wednesday, May 02, 2007 10:35 AM
To: TEITAC Subpart A Subcommittee; = EMAIL ADDRESS REMOVED =
Cc: Schomburg, Paul
Subject: Re: [teitac-subparta] Subpart A Definitions-TTY-Action Needed



Greg: I will try to provide some more information on TIA-1001, but I
suggest that this be discussed in the Telecom Subcommittee. My main concern
is that the current 255 rules require telecommunications equipment to
support "TTY signal compatibility" which includes support for "all
cross-manufacturer non-proprietary standard signals used by TTYs." Thus the
definition of TTY adopted by TEITACC could change what products need to be
compatible with. For this reason, I would prefer that the definition of TTY
be narrowly focused on a standards-based protocol. I think the suggestion
to define "real-time text" separately may have merit, so long as
compatibility with any and all kinds of text messaging is not required under
255 for all telecommunications products.



Thanks, Paul



_____

From: = EMAIL ADDRESS REMOVED =
[mailto: = EMAIL ADDRESS REMOVED = ] On Behalf Of Gregg
Vanderheiden
Sent: Tuesday, May 01, 2007 7:24 PM
To: 'TEITAC Subpart A Subcommittee'; = EMAIL ADDRESS REMOVED =
Subject: Re: [teitac-subparta] Subpart A Definitions-TTY-Action Needed



I think we need to separate TTY (which was defined for PSTN) with general
real-time text communication.



Suggest





TTY Machinery or equipment that employs interactive text based
communications through the transmission of coded signals across the public
switched telephone network in compliance with TIA-825-A, A Frequency Shift
Keyed Modem For Use On The Public Switched Telephone Network;



Real-time text. Text which is transmitted within 1 second of entry
providing a smooth flow of conversational text that can be mixed with
speech.





(TIA-1001 is a standard for intra-trunk communication which is a carrier
only concern. The US government wouldn't be operating telephone trunks. )


Gregg
-- ------------------------------
Gregg C Vanderheiden Ph.D.






_____


From: = EMAIL ADDRESS REMOVED =
[mailto: = EMAIL ADDRESS REMOVED = ] On Behalf Of Schomburg,
Paul
Sent: Tuesday, May 01, 2007 8:11 AM
To: TEITAC Subpart A Subcommittee; = EMAIL ADDRESS REMOVED =
Cc: Schomburg, Paul
Subject: Re: [teitac-subparta] Subpart A Definitions-TTY-Action Needed

Folks: This may be too broad a definition and might include non-standard
proprietary coding or really any text messaging (IM) service one could
imagine. I think it should be more narrowly defined as follows:

An abbreviation for teletypewriter. Machinery or equipment that employs
interactive text based communications through the transmission of coded
signals across the public switched telephone network in compliance with
TIA-825-A, A Frequency Shift Keyed Modem For Use On The Public Switched
Telephone Network; or across an IP network in compliance with TIA-1001,
Transport of TIA-825-A Signals over IP Networks.

Thanks, Paul

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