**TTY *or TDD***

[Version 1]{.underline}: An abbreviation for teletypewriter. Machinery
or equipment that enables interactive text based communications through
the transmission of frequency-shift-keying audio tones across the PSTN
according to TIA-825-A (A Frequency Shift Keyed Modem For Use On The
Public Switched Telephone Network). As used in this part, the term TTY
includes devices for text-to-text communications along with voice and
text intermixed communications such as voice carry over and hearing
carry over. TTYs may include computers with special modems. TTYs are a
subset of devices called text telephones.

*or*

[Version 2]{.underline}: ***The term TDD means a Telecommunications
Device for the Deaf, which is a machine that employs graphic
communication in the transmission of coded signals through a wire or
radio communication system.***

Status: In Progress

Source of Version 2: ADA, Title IV, Section 225(a)(2)\
Text from: Telecommunications

**2.2 If the Product has Speech Output or Throughput**

2.2-A - Magnetic Coupling

Products that deliver output ***with*** an audio transducer that is
normally held up to the ear ***must provide*** a means for effective
magnetic wireless coupling to hearing technologies that allows a user to
effectively utilize the product. ***This does not apply to headphone,
headset, OR other accessories that plug into a jack on the product.***

· *Status: Done*

· *Text from Hardware and Telecommunications*

· *Source: {508}1194.23(h), {255}11943.43(i)*

**2.2-D - Volume**

All products ***with auditory output beyond simple tonal feedback or
signaling*** must allow users to adjust the audio level. At peak volume
output they must have less than 12 dB symmetrical clipping or a total
harmonic distortion (THD) less than XXX dB

· For products ***located*** in a public place, the maximum volume level
must be at least 80 dB SPL RMS***, measured at xx centimeters from the
device at maximum volume setting \[possible without XXX distortion\]***.

· For products that will not be used in public places or where the
volume of the public place is controlled to be under 50 dBA SPL RMS, the
maximum volume level must be at least 65 dB SPL RMS.

**Discussion or rationale**: Final level for THD still to be determined.
Question about where are volumes set? Is that where you measure from?
Does this overlap with 2.3.E?

· *Status: In Progress*

· *Text from Self-Contained/Closed*

· *Source: {508}1194.25(f), {255}1193.43(e)*

· *Impact: *

· *External Reference: *

· *Testability: Formal test method*

· *Metadata*

`o``	`*Disabilities: Hard of hearing*

`o``	`*User Activities: All*

`o``	`*Product Characteristics: Sound output -- speech, Sound output
(other than speech)*

`o``	`*Product Types: All*

**2.2-B - Interference with Hearing Device**

Version 1: Interference to hearing technologies (including hearing aids,
cochlear implants, and assistive listening devices) must be reduced to
the lowest possible level* that allows a user of hearing technologies to
utilize the telecommunications product.*

...to a level that is most effective in allowing a user of hearing
technologies...Today this includes M3 or M4 and T3 or T4 in cellular and
PCS products

...to the level that allows the user of hearing technologiles that meet
the M3 or equivalent to utilize the t/communication product.

***[Recommendation: ]{.underline}** Advisory Note for U.S. use to
include information re existing standards: TIA Standard for Cordless
Phones and the ANSI standard for cellular and PCS frequency bands and
for hearing aid immunity. Standards do not exist for other frequency
bands and for any VoIP at this time.***

**Discussion or Rationale:** Problem with Versions 1-3 is that there is
no criterion for how immune a phone should be in measurable terms. There
are hearing aids that are so poor that one could never have a
transmitting device near them. So that cant be met. One idea was to meet
a standard (See version 4) but that would make this specific to
particular transmitting technologies since they are all tied to
frequency bands and the transmission pulse rate.

· *Status: In Progress*

· *Text from Hardware and Telecommunications*

· *Source: {508}1194.23(i), {255}1193.43(h)*

· *Impact: *

· *External Reference: *

· *Testability: Formal test method*

· *Metadata*

`o``	`*Disabilities: Hearing, Hard of Hearing*

`o``	`*User Activities: *

`o``	`*Product Characteristics: *

**2.2-E - Volume (Gain)**

For incoming voice signals:

1\. Analog line-powered telecommunications products, wireline, and all
cordless telephones (wireline or VoIP) must comply with FCC regulation
§68.317 for volume control

2\. All cellular phones - TBD

3\. All other telecommunications products or systems that provide a
function allowing voice communication must provide a gain adjustable
from the normal unamplified level to at least 20 dB above the normal
unamplified level as measured in accordance with the provisions of the
FCC regulation §68.317 for volume control. The volume at the normal
unamplified level setting must also meet the requirement in FCC
regulation 68.317.

**Discussion or Rationale:**

· Language for cellular phones pending outcome of ATIS Study Group 11
work

· Further research needed for 20 dB requirement

· Review telecoms/communications to be sure requirement is inclusive

· Need to determine if the word \"telecommunications\" should be removed

· *Status: In Progress*

· *Text from Telecommunications*

· *Source: {508}1194.23(f)*

· *Impact: *

· *External Reference: *

· *Testability: Formal test method*

· *Metadata*

`o``	`*Disabilities: Hard of hearing*

`o``	`*User Activities: Real-time voice conversation, IVR*

`o``	`*Product Characteristics: Audio output*

`o``	`*Product Types: Telephones, IVRs*

**5-A - Accessibility Configuration *or Relay Services Accessibility***

Version 1 (current) In complying with this subpart, each agency must:

1\. Activate accessibility features and configure telecommunications
products so that they are accessible to and usable by people with
disabilities.

2\. Ensure access to and use of all telecommunications relay services as
approved by the Federal Communications Commission pursuant to its
authority under 47 U.S.C. Sec. 225, for incoming and outgoing calls, as
needed to achieve functionally equivalent communication access by people
with disabilities.

**Discussion or Rationale:** The first provision addresses agency
requirements, not procurement. It may need to be moved to another
section (Recommendations for Agency Requirements) and/or made into a
general requirement applying to all products and services.

**Version 2** ***Keep only the second bullet in this section, and move
the first bullet to Section 1.2 (suggestion from General/Closed): ***\
In complying with this subpart, each agency must ensure access to and
use of all telecommunications relay services as approved by the Federal
Communications Commission pursuant to its authority under 47 U.S.C. Sec.
225, for incoming and outgoing calls, as needed to achieve functionally
equivalent communication access by people with disabilities..

Discussion: If accept Version 2, then should change title of 5-A to
Relay Services Accessibility

What do with 1. above on agency responsibility?

· *Status: In Progress*

· *Text from Telecommunications*

· *Source: new*

· *Impact: *

· *External Reference: *

· *Testability: #2 is testable by inspection*

· *Metadata*

`o``	`*Disabilities: *

`o``	`*User Activities: *

`o``	`*Product Characteristics: *

`o``	`*Product Types: *

**5-B - Real-Time Text Reliability and Interoperability **

If hardware or software provides real-time voice conversation
functionality it must provide at least one means of real-time text
communication where the following reliability requirements are met:

1\. Products must use a real-time text (RTT) format that meets the
following requirements:

`o``	`RTT format must be the standard real-time text format for the voice
platform (one that is supported by all terminal, router, gateway and
other products on that platform);

`o``	`RTT format must transmit characters with less than 1 second delay
from entry;

`o``	`RTT format must transmit text with less than 1% Total Character
Error Rate at the peak network traffic specified for intelligible speech
transmission (text must work on the network as long as speech does);

`o``	`RTT format must support intermixing of speech and text in both
directions (and support speech and text simultaneously in both
directions if IP based);

`o``	`If product is IP based RTT format must not not rely upon audio
tones for transmission of real-time text over IP.

2\. Products and self-contained system of all types may use any
real-time text format internally that meets reliability provision above
as long as it support the following interoperability provisions where it
connects to other systems and products:

`o``	`If product interfaces with PSTN, it must use TIA 825 Baudot where
it interfaces to the PSTN.

`o``	`If product interfaces with other VoIP products or systems (outside
of a self contained product-system) using SIP it must support RFC-4103
where it interfaces with other VoIP products or systems. If product uses
SIP to interface with VoIP-to-PSTN Gateways it must also support
RFC-4351. Gateways must support RFC-4103 and may support RFC-4351.

`o``	`If product connects to other products or systems using a protocol
other than SIP it must use the standard real-time text protocol that
meets provision 1 above that has been established for that protocol.

NOTE: All products may support and use other protocols in addition to
these as long as the meet the 5 requirements of 5-B(1) above.\
NOTE: A self-contained SIP system that all uses the same real-time text
protocol can be treated as a single product and can use any protocol
internally as long as it supports RFC-4103 where the system-product
connects to other systems or products.

· *Status: In Progress*

· *Text from Telecommunications*

· *Source: {508\]1194.23(b), {255}1193.51(e), this is a combination of
5.B and 5.C in the July 18 draft*

· *Impact: *

· *External Reference: *

· *Testability: Inspection and formal test methods*

· *Metadata*

`o``	`*Disabilities: *

`o``	`*User Activities: *

`o``	`*Product Characteristics: *

`o``	`*Product Types: *

**5-C - Voice Terminal Hardware and Software **

Terminal hardware or software that is capable of providing voice
communications in real-time must comply with the following:

1\. If hardware or software provides voice conversation over IP in any
form, and has a user interface with a multi-line display or runs on
devices that have a multi-line display, then terminal must display any
real-time text that is received if it is received in the standard
real-time text format for that voice transmission format or platform.

2\. If terminal hardware or software provides voice conversation over IP
in any form, and has text generation capability, then the terminal must
allow user to send real-time text in the standard format for that voice
transmission format in parallel with the voice.

3\. If IP voice terminal hardware or software does not provide real-time
text send and receive capability then the terminal must support the
addition of terminals and terminal peripheral equipment that do support
real-time text functionality in conjunction with the voice call
functionality, in the same location and with the same permissions for
use as their voice terminal. If the terminal is in a pubic or shared
area and not in an individual\'s private work area then the connection
must be possible without requiring system-administrator intervention.

4\. If terminal is analog or TDM-digital wired terminal then it must
support the connection of a TTY via an RJ-11 jack in the same location
and with the same permissions for use as the telephone and it must be
capable of allowing simultaneous speech and text conversation without
interference or its microphone shall be capable of being turned on and
off to allow the user to intermix speech with text use.

Note: Provision of the RJ-11 jack may be accomplished by through one of
the following techniques:

· provision of the RJ-11 jack on the telephone,

· the use of a Y-adapter that allows both the analog telephone and the
TTY to be plugged into the same line outlet,

· having built in capability to support an RJ11 module that can provide
a connection point for TTYs;

· *Status: In Progress*

· *Text from Telecommunications*

· *Source: {508}1194.23(a), {255}1193.51(d), this is a combination of
5.D and 5.E in the July 18 draft*

· *Impact: *

· *External Reference: *

· *Testability: Inspection*

· *Metadata*

`o``	`*Disabilities: *

`o``	`*User Activities: *

`o``	`*Product Characteristics: *

`o``	`*Product Types: *

**5-D - IVR, Auto-Attendant and Messaging**

Voice mail, messaging, auto-attendant, and interactive voice response
telecommunications systems must provide access in the following manner:

1\. All functions that are accessible to voice users must also be
directly accessible to users of real-time text.

2\. Use the ITU-T G.711 recommendation for encoding and storing audio
information. If an audio encoder other than G711 is employed, the vendor
must provide evidence that the intelligibility is equal to or better
than that provided by G.711;

3\. Provide full player controls that allow users to pause, rewind, slow
down and repeat all messages and prompts;

4\. Provide prompts (either as provided by the vendor, or by the agency
or customer) without any background sounds that would reduce
intelligibility.

NOTE: Relay services are not considered to be \"directly accessible\".

**Discussion or Rationale:** [Telecommunications will provide an
advisory note about Baudot and TTY. ]{.underline}

· *Status: In Progress*

· *Text from Telecommuncations*

· *Source: {508}1194.23(c), was 5.F in July 18 draft*

· *Impact: *

· *External Reference: *

· *Testability: Inspection (#1,3,4) and Formal test method (#2)*

· *Metadata*

`o``	`*Disabilities: *

`o``	`*User Activities: *

`o``	`*Product Characteristics: *

**5-F - Video Support**

Telecommunications products or systems which have the capacity to
transmit video, text, and voice communications must support internet
protocol text and voice communications in X format, and they must have
sufficient transmission bandwidth capacity to support video
communication such as video relay and point to point video
communications.

**Discussion or Rationale:** \"X format\" remains undefined; comments
were received regarding whether this should be applied to 255 in
addition to 508.

· *Status: In Progress*

· *Text from Telecommuncations*

· *Source: new, was 5.H in July 18 draft*

· *Impact: *

· *External Reference: *

· *Testability: Formal test methods and inspection; will depend on how
\"X format\" is defined.\"*

· *Metadata*

`o``	`*Disabilities: *

`o``	`*User Activities: *

`o``	`*Product Characteristics: *

`o``	`*Product Types: *