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IETF RFC 3625
[ACTIVE]

The QCP File Format and Media Types for Speech Data

Metadata

Publisher
IETF
Doc Type
Informational
Pages
15
Abstract
RFC 2658 specifies the streaming format for 3GPP2 13KK vocoder (High Rate Speech Service Option 17 for Wideband Spread Spectrum Communications Systems, also known as QCELP 13K vocoder) data, but does not specify a storage format. Many implementations have been using the "QCP" file format (named for its file extension) for exchanging QCELP 13K data as well as Enhanced Variable Rate Coder (EVRC) and Selectable Mode Vocoders (SMV) data. (For example, Eudora(r), QuickTime(r), and cmda2000(r) handsets). This document specifies the QCP file format and updates the audio/qcelp media registration to specify this format for storage, and registers the audio/evrc-qcp and audio/smv-qcp media types for EVRC and SMV (respectively) data stored in this format.
Publication Date
2003-10-01
Status Note
Informational
DOI
10.17487/RFC3625
Link
https://doi.org/10.17487/RFC3625
Author(s)
Randall Gellens
Harinath Garudadri
Keyword(s)
QCELP, Audio, Multimedia, VoIP, RTP, MIME
Latest version of IETF RFC 3625

Document Versions — IETF RFC 3625

  • ▶ IETF RFC 3625 (2003-10-01)
    THIS DOC [ACTIVE] [LATEST VERSION]

Normative Reference(s)

  • 3GPP2 C.S0030 "Selectable Mode Vocoder, Service Option for Wideband Spread Spectrum Communication Systems". EXTERNAL
  • 3GPP2 C.S0020 "High Rate Speech Service Option 17 for Wideband Spread Spectrum Communications Systems". EXTERNAL
  • 3GPP2 C.S0014 "Enhanced Variable Rate Codec, Speech Service Option 3 for Wideband Spread Spectrum Digital Systems ". (Used to be TIA/EIA/IS-127) EXTERNAL
  • IETF RFC 2119 [Active*]
  • IETF RFC 2234 [Superseded*]
  • IETF RFC 2658 [Active*]

Bibliographic Reference(s)

  • RFC3558 — EVRC-SMV EXTERNAL
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IETF RFC 3625, The QCP File Format and Media Types for Speech Data. Available at https://doi.org/10.17487/RFC3625
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IETF RFC 3625, The QCP File Format and Media Types for Speech Data. Available at https://doi.org/10.17487/RFC3625

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IETF RFC 3625, The QCP File Format and Media Types for Speech Data. Available at https://doi.org/10.17487/RFC3625
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<span class="citation"><cite>IETF RFC 3625</cite>, The QCP File Format and Media Types for Speech Data. Available at <a href="https://doi.org/10.17487/RFC3625" target="_blank" rel="noopener">https://doi.org/10.17487/RFC3625</a></span>

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IETF RFC 3625, The QCP File Format and Media Types for Speech Data
doi: 10.17487/RFC3625
url: https://doi.org/10.17487/RFC3625
Snippet:
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<cite id="bib-rfc3625">IETF RFC 3625</cite>, The QCP File Format and Media Types for Speech Data
<span class="doi">10.17487/RFC3625</span>
</li>