Subject: [payload] FW: New Version Notification for draft-ramalho-payload-g7110-00.txt

From: "Michael Ramalho (mramalho)" <[email-masked]>
Date: Fri, 10 Jun 2011 10:03:39 -0500

Payloaders,

Re: "draft-ramalho-payload-g7110-00.txt"

This draft specifies the RTP payload format for ITU-T Rec. G.711.0 - a new standard which specifies a stateless and lossless compression for G.711 packet payloads typically used in VoIP networks. It also specifies a storage mode for G.711.0.

G.711.0, being a lossless and stateless compression mechanism for G.711, is not a "codec" in the sense of "lossy" codecs typically carried by RTP.

When negotiated end-to-end, ITU-T Rec. G.711.0 is negotiated as if it were a codec, with the understanding that ITU-T Rec. G.711.0 is used to losslessly encode the underlying (lossy) G.711 pulse code modulation (PCM) sample representation of an audio signal.

However G.711.0, being both lossless and stateless, MAY also be employed as a LOSSLESS COMPRESSION mechanism ANYWHERE in between end systems which have negotiated use of G.711. In this case, the G.711 payloads and the corresponding G.711 RTP headers should appear to the end systems as having been transported transparently (i.e., without payload degradation). This draft also provides guidance for this, so-called "G.711.0 In-The-Middle", use case. When used this way, G.711.0 provides over 50% average compression for typical service provider payloads with 0.000% voice quality degradation relative to G.711 (i.e., no transcoding-based degradation).

Since G.711.0 represents a new concept (lossless and stateless compression of RTP payloads), key properties/attributes of G.711.0 are provided in this draft.

Comments and questions to the draft authors are welcome.

Michael Ramalho

> -----Original Message-----
> From: [email-masked] [mailto:[email-masked]]
> Sent: Thursday, June 09, 2011 1:09 PM
> To: Michael Ramalho (mramalho)
> Cc: [email-masked]; [email-masked]; Michael Ramalho
> (mramalho); [email-masked]; [email-masked]
> Subject: New Version Notification for draft-ramalho-payload-g7110-
> 00.txt
> 
> A new version of I-D, draft-ramalho-payload-g7110-00.txt has been
> successfully submitted by Michael Ramalho and posted to the IETF
> repository.
> 
> Filename:	 draft-ramalho-payload-g7110
> Revision:	 00
> Title:		 RTP Payload Format for G.711.0
> Creation date:	 2011-06-09
> WG ID:		 Individual Submission
> Number of pages: 35
> 
> Abstract:
>    This document specifies the Real-Time Transport Protocol (RTP)
>    payload format for ITU-T Recommendation G.711.0.  ITU-T Rec. G.711.0
>    defines a lossless and stateless compression for G.711 packet
>    payloads typically used in IP networks.  This document also defines
>    two storage mode formats for G.711.0.  A media type registration for
>    this RTP payload format is also included.
> 
> 
> 
> 
> The IETF Secretariat