Work on accessibility in ITU-T SG 16 has its base in
Question 26/16, Accessibility to Multimedia. The work is done in close co-operation with many other groups and in many cases focuses on integrating sections on accessibility in Recommendations. A large part of Q.26’s work aims at including procedures for the
Total Conversation concept for conversation in Real-time Text, Video and Voice as an accessible superset of video telephony, text telephony and voice telephony.
The following ITU-T Recommendations, Supplements and Technical Papers are a result of SG 16’s work: -
V.18: Harmonization of text telephony
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V.151: Procedures for the end-to-end connection of analogue PSTN text telephones over an IP network utilizing text relay
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V.254: Asynchronous serial command interface for assistive and multi-functional communication devices
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T.140: General presentation protocol for text conversation
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T.134: Text conversation in the T.120 data conferencing environment
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H.323 Annex G: for text conversation in H.323 packet multimedia environment
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H.248.2: Gateway procedures between text telephony in PSTN and real-time text in IP and other networks
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H.702: Accessibility profiles for IPTV systems
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F.790: Telecommunications accessibility guidelines for older persons and persons with disabilities
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F.791: Accessibility terms and definitions
- F.921: Audio-based network navigation system for persons with vision impairment
- F.930: Multimedia telecommunication relay services
- T.701.11: Guidance on text alternatives for images
- H Series Supplement 1: Requirements on video communication for sign language and lip reading
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H Series Supplement 17 | ISO/IEC Guide 71: Guide for addressing accessibility in standards
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FSTP-TACL: Telecommunications accessibility checklist for standards writers
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FSTP-ACC-RemPart: Guidelines for supporting remote participation in meetings for all
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FSTP-AM: Guidelines for accessible meetings
- FSTP-ACC.WebVRI: Guideline on web-based remote sign language interpretation or video remote interpretation (VRI) system
- FSTP-ACC-RCS: Overview of remote
captioning services
The following are Recommendations in which sections on accessibility have been integrated: - Sections on accessibility were included in NGN R1 Scope
Y.2000SerSup1
- Definition in
F.703 of Total Conversation and Text Telephony services, offering real-time text, video and audio communication
- Definition of the real-time conversational text medium in
F.700
- Inclusion in
H.320 of real-time text conversation in ISDN multimedia
- Section on transport of real-time text in ISDN multimedia environments in
H.224
- Sections on modem negotiation for text telephony in
V.8
- Sections in
V.8 bis on modem negotiation for text telephony
- Sections in V.250 on control of V.18 modems
- Inclusion in
H.324 of real time text conversation in circuit switched multimedia
- Section in
H.245 for handling real-time text connections in H.324 and H.323 multimedia environments
- Inclusion in
T.120 of real-time text in data conferencing
- Section in
T.124 for handling real-time text sessions in the T.120 environment
- Section in
G.168 for testing of echo cancellation in calls with text telephony
- Section in
F.724 for accessible media additions in service description and requirements for video telephony services over IP networks
- Section in
F.733 for accessible media additions in multimedia conference services over IP
- Section in
F.742 for accessible media additions in service description and requirements for distance learning services
- Section in
F.741 for accessible media additions in service description and requirements for audiovisual on demand services
- Inclusion in
V.152 of text telephony considerations in voice band data gateway procedures
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