Goto Section: 64.402 | 64.602 | Table of Contents
Revised as of October 1, 2019
Goto Year:2018 |
§ 64.601 Definitions and provisions of general applicability.
(a) For purposes of this subpart, the terms Public Safety Answering
Point (PSAP), statewide default answering point, and appropriate local
emergency authority are defined in 47 CFR 64.3000; the terms pseudo-ANI
and Wireline E911 Network are defined in 47 CFR 9.3; the term affiliate
is defined in 47 CFR 52.12(a)(1)(i), and the terms majority and debt
are defined in 47 CFR 52.12(a)(1)(ii).
(1) 711. The abbreviated dialing code for accessing relay services
anywhere in the United States.
(2) ACD platform. The hardware and/or software that comprise the
essential call center function of call distribution, and that are a
necessary core component of Internet-based TRS.
(3) American Sign Language (ASL). A visual language based on hand
shape, position, movement, and orientation of the hands in relation to
each other and the body.
(4) ANI. For 911 systems, the Automatic Number Identification (ANI)
identifies the calling party and may be used as the callback number.
(5) ASCII. An acronym for American Standard Code for Information
Interexchange which employs an eight bit code and can operate at any
standard transmission baud rate including 300, 1200, 2400, and higher.
(6) Authorized provider. An iTRS provider that becomes the iTRS user's
new default provider, having obtained the user's authorization verified
in accordance with the procedures specified in this part.
(7) Baudot. A seven bit code, only five of which are information bits.
Baudot is used by some text telephones to communicate with each other
at a 45.5 baud rate.
(8) Call release. A TRS feature that allows the CA to sign-off or be
“released” from the telephone line after the CA has set up a telephone
call between the originating TTY caller and a called TTY party, such as
when a TTY user must go through a TRS facility to contact another TTY
user because the called TTY party can only be reached through a
voice-only interface, such as a switchboard.
(9) Common carrier or carrier. Any common carrier engaged in interstate
Communication by wire or radio as defined in section 3(h) of the
Communications Act of 1934, as amended (the Act), and any common
carrier engaged in intrastate communication by wire or radio,
notwithstanding sections 2(b) and 221(b) of the Act.
(10) Communications assistant (CA). A person who transliterates or
interprets conversation between two or more end users of TRS. CA
supersedes the term “TDD operator.”
(11) Default provider. The iTRS provider that registers and assigns a
ten-digit telephone number to an iTRS user pursuant to § 64.611.
(12) Default provider change order. A request by an iTRS user to an
iTRS provider to change the user's default provider.
(13) Direct video customer support. A telephone customer support
operation that enables callers with hearing or speech disabilities to
engage in real-time direct video communication in ASL with ASL speakers
in a call center operation.
(14) Enterprise videophone. A videophone maintained by a business,
organization, government agency, or other entity, and designated for
use by its employees or other individuals in private or restricted
(15) Hearing carry over (HCO). A form of TRS where the person with the
speech disability is able to listen to the other end user and, in
reply, the CA speaks the text as typed by the person with the speech
disability. The CA does not type any conversation. Two-line HCO is an
HCO service that allows TRS users to use one telephone line for hearing
and the other for sending TTY messages. HCO-to-TTY allows a relay
conversation to take place between an HCO user and a TTY user.
HCO-to-HCO allows a relay conversation to take place between two HCO
(16) Hearing point-to-point video user. A hearing individual who has
been assigned a ten-digit NANP number that is entered in the TRS
Numbering Directory to access point-to-point service.
(17) Interconnected VoIP service. The term “interconnected VoIP
service” has the meaning given such term under § 9.3 of this chapter, as
such section may be amended from time to time.
(18) Internet-based TRS (iTRS). A telecommunications relay service
(TRS) in which an individual with a hearing or a speech disability
connects to a TRS communications assistant using an Internet
Protocol-enabled device via the Internet, rather than the public
switched telephone network. Except as authorized or required by the
Commission, Internet-based TRS does not include the use of a text
telephone (TTY) or RTT over an interconnected voice over Internet
(19) Internet Protocol Captioned Telephone Service (IP CTS). A
telecommunications relay service that permits an individual who can
speak but who has difficulty hearing over the telephone to use a
telephone and an Internet Protocol-enabled device via the Internet to
simultaneously listen to the other party and read captions of what the
other party is saying. With IP CTS, the connection carrying the
captions between the relay service provider and the relay service user
is via the Internet, rather than the public switched telephone network.
(20) Internet Protocol Relay Service (IP Relay). A telecommunications
relay service that permits an individual with a hearing or a speech
disability to communicate in text using an Internet Protocol-enabled
device via the Internet, rather than using a text telephone (TTY) and
the public switched telephone network.
(21) IP Relay access technology. Any equipment, software, or other
technology issued, leased, or provided by an Internet-based TRS
provider that can be used to make and receive an IP Relay call.
(22) iTRS access technology. Any equipment, software, or other
technology issued, leased, or provided by an Internet-based TRS
provider that can be used to make and receive an Internet-based TRS
(23) New default provider. An iTRS provider that, either directly or
through its numbering partner, initiates or implements the process to
become the iTRS user's default provider by replacing the iTRS user's
original default provider.
(24) Non-English language relay service. A telecommunications relay
service that allows persons with hearing or speech disabilities who use
languages other than English to communicate with voice telephone users
in a shared language other than English, through a CA who is fluent in
(25) Non-interconnected VoIP service. The term “non-interconnected VoIP
(i) Means a service that—
(A) Enables real-time voice communications that originate from or
terminate to the user's location using Internet protocol or any
successor protocol; and
(B) Requires Internet protocol compatible customer premises equipment;
(ii) Does not include any service that is an interconnected VoIP
(26) Numbering partner. Any entity with which an Internet-based TRS
provider has entered into a commercial arrangement to obtain North
American Numbering Plan telephone numbers.
(27) Original default provider. An iTRS provider that is the iTRS
user's default provider immediately before that iTRS user's default
provider is changed.
(28) Point-to-point video call. A call placed via a point-to-point
(29) Point-to-point video service. A service that enables a user to
place and receive non-relay video calls without the assistance of a CA.
(30) Public videophone. A videophone maintained by a business,
organization, government agency, or other entity, and made available
for use by the public in a public space, such as a public area of a
business, school, hospital, library, airport, or government building.
(31) Qualified direct video entity. An individual or entity that is
approved by the Commission for access to the TRS Numbering Directory
that is engaged in direct video customer support and that is the
end-user customer that has been assigned a telephone number used for
direct video customer support calls or is the designee of such entity.
(32) Qualified interpreter. An interpreter who is able to interpret
effectively, accurately, and impartially, both receptively and
expressively, using any necessary specialized vocabulary.
(33) Real-Time Text (RTT). The term real-time text shall have the
meaning set forth in § 67.1 of this chapter.
(34) Registered internet-based TRS user. An individual who has
registered with a VRS, IP Relay, or IP CTS provider as described in
(35) Registered Location. The most recent information obtained by a
VRS, IP Relay, or IP CTS provider that identifies the physical location
of an end user.
(36) Sign language. A language which uses manual communication and body
language to convey meaning, including but not limited to American Sign
(37) Speech-to-speech relay service (STS). A telecommunications relay
service that allows individuals with speech disabilities to communicate
with voice telephone users through the use of specially trained CAs who
understand the speech patterns of persons with speech disabilities and
can repeat the words spoken by that person.
(38) Speed dialing. A TRS feature that allows a TRS user to place a
call using a stored number maintained by the TRS facility. In the
context of TRS, speed dialing allows a TRS user to give the CA a
short-hand” name or number for the user's most frequently called
(39) Telecommunications relay services (TRS). Telephone transmission
services that provide the ability for an individual who has a hearing
or speech disability to engage in communication by wire or radio with a
hearing individual in a manner that is functionally equivalent to the
ability of an individual who does not have a hearing or speech
disability to communicate using voice communication services by wire or
radio. Such term includes services that enable two-way communication
between an individual who uses a text telephone or other nonvoice
terminal device and an individual who does not use such a device,
speech-to-speech services, video relay services and non-English relay
services. TRS supersedes the terms “dual party relay system,” “message
relay services,” and “TDD Relay.”
(40) Text telephone (TTY). A machine that employs graphic communication
in the transmission of coded signals through a wire or radio
communication system. TTY supersedes the term “TDD” or
“telecommunications device for the deaf,” and TT.
(41) Three-way calling feature. A TRS feature that allows more than two
parties to be on the telephone line at the same time with the CA.
(42) TRS Numbering Administrator. The neutral administrator of the TRS
Numbering Directory selected based on a competitive bidding process.
(43) TRS Numbering Directory. The database administered by the TRS
Numbering Administrator, the purpose of which is to map each registered
Internet-based TRS user's NANP telephone number to his or her end
(44) TRS User Registration Database. A system of records containing TRS
user identification data capable of:
(i) Receiving and processing subscriber information sufficient to
identify unique TRS users and to ensure that each has a single default
(ii) Assigning each VRS user a unique identifier;
(iii) Allowing VRS providers and other authorized entities to query the
TRS User Registration Database to determine if a prospective user
already has a default provider;
(iv) Allowing VRS providers to indicate that a VRS user has used the
(v) Maintaining the confidentiality of proprietary data housed in the
database by protecting it from theft, loss or disclosure to
unauthorized persons. The purpose of this database is to ensure
accurate registration and verification of VRS users and improve the
efficiency of the TRS program.
(45) Unauthorized provider. An iTRS provider that becomes the iTRS
user's new default provider without having obtained the user's
authorization verified in accordance with the procedures specified in
(46) Unauthorized change. A change in an iTRS user's selection of a
default provider that was made without authorization verified in
accordance with the verification procedures specified in this part.
(47) Video relay service (VRS). A telecommunications relay service that
allows people with hearing or speech disabilities who use sign language
to communicate with voice telephone users through video equipment. The
video link allows the CA to view and interpret the party's signed
conversation and relay the conversation back and forth with a voice
(48) Visual privacy screen. A screen or any other feature that is
designed to prevent one party or both parties on the video leg of a VRS
call from viewing the other party during a call.
(49) Voice carry over (VCO). A form of TRS where the person with the
hearing disability is able to speak directly to the other end user. The
CA types the response back to the person with the hearing disability.
The CA does not voice the conversation. Two-line VCO is a VCO service
that allows TRS users to use one telephone line for voicing and the
other for receiving TTY messages. A VCO-to-TTY TRS call allows a relay
conversation to take place between a VCO user and a TTY user.
VCO-to-VCO allows a relay conversation to take place between two VCO
(50) VRS access technology. Any equipment, software, or other
technology issued, leased, or provided by an Internet-based TRS
provider that can be used to make and receive a VRS call.
(51) VRS Access Technology Reference Platform. A software product
procured by or on behalf of the Commission that provides VRS
functionality, including the ability to make and receive VRS and
point-to-point calls, dial-around functionality, and the ability to
update user registration location, and against which providers may test
their own VRS access technology and platforms for compliance with the
Commission's interoperability and portability rules.
(b) For purposes of this subpart, all regulations and requirements
applicable to common carriers shall also be applicable to providers of
interconnected VoIP service.
[ 68 FR 50976 , Aug. 25, 2003, as amended at 69 FR 53351 , Sept. 1, 2004;
72 FR 43559 , Aug. 6, 2007; 73 FR 41294 , July 18, 2008; 76 FR 24400 , May
2, 2011; 76 FR 65969 , Oct. 25, 2011; 78 FR 40605 , July 5, 2013; 82 FR 7707 , Jan. 23, 2017; 82 FR 17761 , Apr. 13, 2017; 82 FR 39682 , Aug. 22,
2017; 84 FR 8461 , Mar. 8, 2019; 84 FR 26369 , June 6, 2019]
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Goto Section: 64.402 | 64.602
Goto Year: 2018 |
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