(RFC 4695 published November 2006, subtype last updated June 2011 per RFC 6295) Media type name: audio Subtype name: asc Required parameters: None. Optional parameters: None. Encoding considerations: The native form of the data object is binary data, zero-padded to an octet boundary. Disk files that store this data object use the file extension ".acn". Restrictions on usage: This type is only defined for data object (stored file) transfer. The most common transports for the type are HTTP and SMTP. Security considerations: See Section 9 of this memo. Interoperability considerations: None. Published specification: The audio/asc data object is the AudioSpecificConfig binary data structure, which is normatively defined in [MPEGAUDIO]. Applications that use this media type: MPEG 4 Audio servers and terminals that support audio/mpeg4-generic RTP streams for mode rtp-midi. Additional information: None. Person & email address to contact for further information: John Lazzaro Intended usage: COMMON. Author: John Lazzaro Change controller: IETF Audio/Video Transport Working Group delegated from the IESG.