Duplication Delay Attribute in the Session Description Protocol
A. Begen, Yujun Cai, H. Ou · 2014
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. Status of This Memo This is an Internet Standards Track document.This document is a product of the Internet Engineering Task Force (IETF).It represents the consensus of the IETF community.It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG).Further information on Internet Standards is available in Section 2 of RFC 5741.