Negotiating Human Language in Real-Time Communications
draft-ietf-slim-negotiating-human-language-05

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Document Type Active Internet-Draft (slim WG)
Author Randall Gellens 
Last updated 2017-02-01
Replaces draft-gellens-slim-negotiating-human-language, draft-gellens-negotiating-human-language
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Network Working Group                                         R. Gellens
Internet-Draft                                Core Technology Consulting
Intended status: Standards Track                        February 1, 2017
Expires: August 5, 2017

         Negotiating Human Language in Real-Time Communications
             draft-ietf-slim-negotiating-human-language-05

Abstract

   Users have various human (natural) language needs, abilities, and
   preferences regarding spoken, written, and signed languages.  When
   establishing interactive communication ("calls") there needs to be a
   way to negotiate (communicate and match) the caller's language and
   media needs with the capabilities of the called party.  This is
   especially important with emergency calls, where a call can be
   handled by a call taker capable of communicating with the user, or a
   translator or relay operator can be bridged into the call during
   setup, but this applies to non-emergency calls as well (as an
   example, when calling a company call center).

   This document describes the need and a solution using new SDP stream
   attributes.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
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   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on August 5, 2017.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Gellens                  Expires August 5, 2017                 [Page 1]
Internet-Draft         Negotiating Human Language          February 2017

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Desired Semantics . . . . . . . . . . . . . . . . . . . . . .   5
   4.  The existing 'lang' attribute . . . . . . . . . . . . . . . .   5
   5.  Proposed Solution . . . . . . . . . . . . . . . . . . . . . .   6
     5.1.  Rationale . . . . . . . . . . . . . . . . . . . . . . . .   6
     5.2.  New 'humintlang-send' and 'humintlang-recv' attributes  .   6
     5.3.  Advisory vs Required  . . . . . . . . . . . . . . . . . .   8
     5.4.  Silly States  . . . . . . . . . . . . . . . . . . . . . .   8
     5.5.  Examples  . . . . . . . . . . . . . . . . . . . . . . . .   9
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   8.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  10
   9.  Changes from Previous Versions  . . . . . . . . . . . . . . .  10
     9.1.  Changes from draft-ietf-slim-...-02 to draft-ietf-
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     9.8.  Changes from draft-gellens-mmusic-...-02 to draft-
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     9.9.  Changes from draft-gellens-mmusic-...-01 to -02 . . . . .  11
     9.10. Changes from draft-gellens-mmusic-...-00 to -01 . . . . .  11
     9.11. Changes from draft-gellens-...-02 to draft-gellens-
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