Internet Research Task Force(IRTF) The IRTF is chartered by the Internet Architecture Board to consider long-term Internet issues from a theoretical point of view. It has Research Groups, similar to Internet Engineering Task Force Working Groups, which are each tasked to discuss different research topics. Multi-cast audio/video conferencing and privacy enhanced mail are samples of IRTF output.
Last updated: 1994-12-08
Internet Research Task Force ♦ Internet Security Association and Key Management Protocol
Try this search on Wikipedia, Wiktionary, Google, OneLook.