MIME media type name: text MIME subtype name: parityfec Required parameters: none Note that [3] mandates that RTP payload formats without a defined rate must define a rate parameter as part of their MIME registration. The payload format for generic forward error correction [1] does not specify a rate parameter. However, the rate for FEC data is equal to the rate of the media data it protects. Optional parameters: none Typical optional parameters [3], such as the number of channels, and the duration of audio per packet, do not apply to FEC data. The number of channels is effectively the same as the media data it protects; the same is true for the duration of text per packet. Encoding considerations: This format is only defined for transport within the Real Time Transport protocol (RTP) [4,5]. Its transport within RTP is fully specified with RFC 2733 [1]. Security considerations: the same security considerations apply to these MIME registrations as to the payloads for for them, as detailed in RFC 2733. Interoperability considerations: none Published specification: This MIME type is described fully within RFC 2733 [1]. Applications which use this media type: Audio, video and text streaming tools which seek to improve resiliency to loss by sending additional data with the media stream. Additional information: none Person & email address to contact for further information: Jonathan Rosenberg dynamicsoft 72 Eagle Rock Avenue First Floor East Hanover, NJ 07936 email: jdrosen&dynamicsoft.com jdrosen&alum.mit.edu Intended usage: COMMON Author/Change controller: This registration is part of the IETF registration tree. RTP and SDP Issues: Usage of this format within RTP and the Session Description Protocol (SDP) [6] are fully specified within RFC 2733 [1].