Real-Time Transport Protocol Payload Format for the Variable- Rate Multimode Wideband Audio Codec
RFC 4348, “Real-Time Transport Protocol Payload Format for the Variable- Rate Multimode Wideband Audio Codec”, is a Proposed Standard document published in January 2006 by S. Ahmadi. It has since been updated by RFC 4424. The canonical text is published by the RFC Editor.
Abstract
This document specifies a real-time transport protocol (RTP) payload format to be used for the Variable-Rate Multimode Wideband (VMR-WB) speech codec. The payload format is designed to be able to interoperate with existing VMR-WB transport formats on non-IP networks. A media type registration is included for VMR-WB RTP payload format.
VMR-WB is a variable-rate multimode wideband speech codec that has a number of operating modes, one of which is interoperable with AMR-WB (i.e., RFC 3267) audio codec at certain rates. Therefore, provisions have been made in this document to facilitate and simplify data packet exchange between VMR-WB and AMR-WB in the interoperable mode with no transcoding function involved. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 4348 is hosted at rfc-editor.org. Available in TXT,HTML.
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