| source ^ source | packets | packets v | +--------------+ +--------------+ |Transport | network|Transport | |(including CC)| information| | | | <==| | +--------------+ +--------------+ | network packets ^ network packets v | +--------------+ +--------------+ | FEC |source | FEC | | |and/or signaling| | | |repair recovered| | | |symbols symbols| | | |==> <==| | +--------------+ +--------------+ SENDER RECEIVER