User Requirements for the Session Initiation Protocol (SIP) in Support of Deaf, Hard of Hearing and Speech-impaired Individuals
RFC 3351

Document Type RFC - Informational (August 2002; No errata)
Last updated 2015-10-14
Stream IETF
Formats plain text pdf htmlized bibtex
Stream WG state (None)
Document shepherd No shepherd assigned
IESG IESG state RFC 3351 (Informational)
Consensus Boilerplate Unknown
Telechat date
Responsible AD Allison Mankin
IESG note published

Responsible: Finished
Send notices to <rohan@cisco.com>, <dean.willis@softarmor.com>
Network Working Group                                        N. Charlton
Request for Comments: 3351                                      Millpark
Category: Informational                                        M. Gasson
                                                          Koru Solutions
                                                               G. Gybels
                                                              M. Spanner
                                                                    RNID
                                                             A. van Wijk
                                                                Ericsson
                                                             August 2002

      User Requirements for the Session Initiation Protocol (SIP)
                  in Support of Deaf, Hard of Hearing
                    and Speech-impaired Individuals

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2002).  All Rights Reserved.

Abstract

   This document presents a set of Session Initiation Protocol
   (SIP) user requirements that support communications for deaf, hard of
   hearing and speech-impaired individuals.  These user requirements
   address the current difficulties of deaf, hard of hearing and
   speech-impaired individuals in using communications facilities, while
   acknowledging the multi-functional potential of SIP-based
   communications.

   A number of issues related to these user requirements are further
   raised in this document.

   Also included are some real world scenarios and some technical
   requirements to show the robustness of these requirements on a
   concept-level.

Charlton, et al.             Informational                      [Page 1]
RFC 3351   SIP for Deaf, Hard of Hearing and Speech Impaired August 2002

Table of Contents

   1. Terminology and Conventions Used in this Document................2
   2. Introduction.....................................................3
   3. Purpose and Scope................................................4
   4. Background.......................................................4
   5. Deaf, Hard of Hearing and Speech-impaired Requirements for SIP...5
      5.1 Connection without Difficulty................................5
      5.2 User Profile.................................................6
      5.3 Intelligent Gateways.........................................6
      5.4 Inclusive Design.............................................7
      5.5 Resource Management..........................................7
      5.6 Confidentiality and Security.................................7
   6. Some Real World Scenarios........................................8
      6.1 Transcoding Service..........................................8
      6.2 Media Service Provider.......................................9
      6.3 Sign Language Interface......................................9
      6.4 Synthetic Lip-reading Support for Voice Calls...............10
      6.5 Voice-Activated Menu Systems................................10
      6.6 Conference Call.............................................11
   7. Some Suggestions for Service Providers and User Agent
      Manufacturers...................................................13
   8. Acknowledgements................................................14
      Security Considerations.........................................14
      Normative References............................................15
      Informational References........................................15
      Author's Addresses..............................................15
      Full Copyright Statement........................................17

1. Terminology and Conventions Used in this Document

   In this document, the key words "MUST", "MUST NOT","REQUIRED",
   "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY",
   and "OPTIONAL" are to be interpreted as described in BCP 14,
   RFC2119[1] and indicate requirement levels for compliant SIP
   implementations.

   For the purposes of this document, the following terms are considered
   to have these meanings:

   Abilities:  A person's capacity for communicating which could include
   a hearing or speech impairment or not.  The terms Abilities and
   Preferences apply to both caller and call-recipient.

   Preferences:  A person's choice of communication mode.  This could
   include any combination of media streams, e.g., text, audio, video.

Charlton, et al.             Informational                      [Page 2]
RFC 3351   SIP for Deaf, Hard of Hearing and Speech Impaired August 2002

   The terms Abilities and Preferences apply to both caller and
   call-recipient.

   Relay Service:  A third-party or intermediary that enables
Show full document text