Providing Integrated Services over Low-bitrate Links
Carsten Bormann · 1999
This document describes an architecture for providing integrated services over low-bitrate links, such as modem lines, ISDN Bchannels, and sub-T1 links.It covers only the lower parts of the Internet Multimedia Conferencing Architecture [1]; additional components required for application services such as Internet Telephony (e.g., a session initiation protocol) are outside the scope of this document.The main components of the architecture are: a real-time encapsulation format for asynchronous and synchronous lowbitrate links, a header compression architecture optimized for realtime flows, elements of negotiation protocols used between routers (or between hosts and routers), and announcement protocols used by applications to allow this negotiation to take place.