Type name: audio Subtype name: TSVCIS Required parameters: Clock Rate (Hz): 8000 Optional parameters: ptime: the recommended length of time (in milliseconds) represented by the media in a packet. It SHALL use the nearest rounded-up ms integer packet duration. For TSVCIS, this corresponds to the following values: 23, 45, 68, 90, 112, 135, 156, and 180. Larger values can be used as long as they are properly rounded. See Section 6 of RFC 4566 [RFC4566]. maxptime: the maximum length of time (in milliseconds) that can be encapsulated in a packet. It SHALL use the nearest rounded-up ms integer packet duration. For TSVCIS, this corresponds to the following values: 23, 45, 68, 90, 112, 135, 156, and 180. Larger values can be used as long as they are properly rounded. See Section 6 of RFC 4566 [RFC4566]. bitrate: specifies the MELPe coder bitrates supported. Possible values are a comma-separated list of rates from the following set: 2400, 1200, 600. The modes are listed in order of preference; the first is preferred. If "bitrate" is not present, the fixed coder bitrate of 2400 MUST be used. tcmax: specifies the TSVCIS maximum value for the TC supported or desired, ranging from 1 to 255. If "tcmax" is not present, a default value of 35 is used. Channels: 1 Encoding considerations: This media subtype is framed and binary; see Section 4.8 of RFC 6838 [RFC6838]. Security considerations: Please see Section 8 of RFC 8817 [RFC8817]. Interoperability considerations: N/A Published specification: [TSVCIS] Applications that use this media type: N/A Fragment identifier considerations: N/A Additional information: Clock Rate (Hz): 8000 Channels: 1 Deprecated alias names for this type: N/A Magic number(s): N/A File extension(s): N/A Macintosh file type code(s): N/A Person & email address to contact for further information: Victor Demjanenko, Ph.D. Intended usage: COMMON Restrictions on usage: The media subtype depends on RTP framing and hence is only defined for transfer via RTP [RFC3550]. Transport within other framing protocols is not defined at this time. Author: Victor Demjanenko, Ph.D. Change controller: IETF, contact Provisional registration? (standards tree only): No