(RFC 3842 published August 2004, subtype last updated August 2004) MIME media type name: application MIME subtype name: simple-message-summary Required parameters: none. Optional parameters: none. Encoding considerations: This MIME type was designed for use with protocols which can carry binary-encoded data. Although the format of this MIME type is similar to RFC 2822, it is not identical. (Specifically, line folding rules are SIP-specific and included URIs can contain non-ASCII characters.) Protocols which do not carry binary data (which have line length or character-set restrictions for example) MUST use a reversible transfer encoding (such as base64) to carry this MIME type. Security considerations: See the "Security Considerations" section in this document. Interoperability considerations: none Published specification: This document. Applications which use this media: The simple-message-summary application subtype supports the exchange of message waiting and message summary information in SIP networks. Additional information: 1. Magic number(s): N/A 2. File extension(s): N/A 3. Macintosh file type code: N/A