Temporal Interleaving Attribute in the Session Description Protocol
A straightforward approach to provide protection against network outages (or packet losses) with a longest duration of T time units is to simply duplicate the original packets and send each copy separated in time by at least T time units. This approach is commonly referred to as Temporal Redundancy or Temporal Interleaving. This document defines an attribute to indicate the presence of temporally redundant media streams and the interleaving period in the Session Description Protocol.