Duplication Delay Attribute in the Session Description Protocol
RFC 7197, “Duplication Delay Attribute in the Session Description Protocol”, is a Proposed Standard document published in April 2014 by A. Begen, Y. Cai, H. Ou. The canonical text is published by the RFC Editor.
Abstract
A straightforward approach to provide protection against packet losses due to network outages with a longest duration of T time units is to duplicate the original packets and send each copy separated in time by at least T time units. This approach is commonly referred to as "time-shifted redundancy", "temporal redundancy", or simply "delayed duplication". This document defines an attribute to indicate the presence of temporally redundant media streams and the duplication delay in the Session Description Protocol.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 7197 is hosted at rfc-editor.org. Available in TXT,HTML.
- RFC 7196 Making Route Flap Damping Usable
- RFC 7198 Duplicating RTP Streams
- RFC 7195 Session Description Protocol Extension for Setting Audio and Video Media Streams over Circuit-Switched Bearers in the Public Switched Telephone Network
- RFC 7199 Location Configuration Extensions for Policy Management
- RFC 7194 Default Port for Internet Relay Chat via TLS/SSL
- RFC 7200 A Session Initiation Protocol Load-Control Event Package
- RFC 7193 The application/cms Media Type
- RFC 7201 Options for Securing RTP Sessions