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RTP Payload Format for Standard apt-X and Enhanced apt-X Codecs

Approval announcement
Draft of message to be sent after approval:


From: The IESG <>
To: IETF-Announce <>
Cc: RFC Editor <>,
    payload mailing list <>,
    payload chair <>
Subject: Protocol Action: 'RTP Payload Format for Standard apt-X and Enhanced apt-X Codecs' to Proposed Standard (draft-ietf-payload-rtp-aptx-05.txt)

The IESG has approved the following document:
- 'RTP Payload Format for Standard apt-X and Enhanced apt-X Codecs'
  (draft-ietf-payload-rtp-aptx-05.txt) as Proposed Standard

This document is the product of the Audio/Video Transport Payloads
Working Group.

The IESG contact persons are Richard Barnes and Alissa Cooper.

A URL of this Internet Draft is:

Ballot Text

Technical Summary

The document describes a payload format that permits transmission of multiple related audio channels in a single RTP payload, and a means of establishing Standard apt-X and Enhanced apt-X connections through the Session Description Protocol (SDP).

Working Group Summary

The WGLC was run once and it went rather smoothly. There were multiple reviews and they were addressed in the revisions after the WGLC.

Document Quality

There have been multiple vendors that sent an email to the mailing list saying that they strongly supported this draft and would deploy it as soon as the draft was completed. Media subtype registration was requested on Oct. 19th.


Ali Begen is the document shepherd and Richard Barnes is the responsible AD.

RFC Editor Note