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Additional WebRTC Audio Codecs for Interoperability (RFC7875)

IP.com Disclosure Number: IPCOM000246753D
Original Publication Date: 2016-May-01
Included in the Prior Art Database: 2016-Jun-29
Document File: 24 page(s) / 27K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

S. Proust: AUTHOR [+2]


As indicated in [OVERVIEW], it has been anticipated that WebRTC will not remain an isolated island and that some WebRTC endpoints will need to communicate with devices used in other existing networks with the help of a gateway. Therefore, in order to maximize the possibility of establishing the session without the need for audio transcoding, it is recommended in [RFC7874] to include in the offer other suitable audio codecs beyond those that are mandatory to implement. This document provides some guidelines on the suitable codecs to be considered for WebRTC endpoints to address the use cases most relevant to interoperability.

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Internet Engineering Task Force (IETF)                    S. Proust, Ed. Request for Comments: 7875                                        Orange Category: Informational                                         May 2016 ISSN: 2070-1721

           Additional WebRTC Audio Codecs for Interoperability


   To ensure a baseline of interoperability between WebRTC endpoints, a    minimum set of required codecs is specified.  However, to maximize    the possibility of establishing the session without the need for    audio transcoding, it is also recommended to include in the offer    other suitable audio codecs that are available to the browser.

   This document provides some guidelines on the suitable codecs to be    considered for WebRTC endpoints to address the use cases most    relevant to interoperability.

Status of This Memo

   This document is not an Internet Standards Track specification; it is    published for informational purposes.

   This document is a product of the Internet Engineering Task Force    (IETF).  It has been approved for publication by the Internet    Engineering Steering Group (IESG).  Not all documents approved by the    IESG are a candidate for any level of Internet Standard; see    Section 2 of RFC 5741.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at    http://www.rfc-editor.org/info/rfc7875.

Proust                        Informational                     [Page 1]
 RFC 7875             WebRTC Audio Codecs for Interop            May 2016

 Copyright Notice

   Copyright (c) 2016 IETF Trust and the persons identified as the    document authors.  All rights reserved.

   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    publication of this document.  Please review these documents    carefully, as they describe your rights and restrictions with respect    to this document.  Code Components extracted from this document must    include Simplified BSD License text as described in Section 4.e of    the Trust Legal Provisions and are provided without warranty as    described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3

   2.  Definitions and Abbreviations . . . . . . . . . . . . . . . .   3

   3.  Rationale for Additional WebRTC Codecs  . . . . . . . . . . .   4

   4.  Additional Suitable Codecs for WebRTC . . . . . . . . . . . .   5

     4.1.  AMR-WB  . . . . . . . . . . . . . . . . . . . . . . . . .   5

       4.1.1.  AMR-WB General Description  . . . . . ....