Thread Subject: Re: Subpart A Definitions-TTY-Action Needed
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From: Jessica M. Brodey
Date: Tue, May 01 2007 7:50 PM
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I understand the desire to separate the definitions, but we do need to
recognize that TTYs have expanded from their once traditional and narrowly
defined usage, and are no longer limited to the PSTN. As such, it is
important that our definition reflect the current scope of TTYs. This
should include VoIP, Internet Telephony, cellular networks, and
computer-based TTYs. I believe this is why the new definition was drafted
in the first place.
Jessica Brodey
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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.
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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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