[VOIPSEC] P2Pnat Media - A H.323 alternative to ICE

[Simon Horne]

Michael

The proposal builds on H.460.17/18/19 and is designed to work with these 
standards.

The biggest limitation with these standards is that media must be proxied 
via H.460.19 for NAT.  P2Pnat Media slips between the signalling of 
H.460.17 or 18 and media proxy of H.460.19 so to provide an option not to 
proxy (an estimated) 90% of the media but instead send that media directly 
between the endpoints.

Basically it is an interoperable extension of H.460.17 or 18 and an 
alternative for 90% of calls to H.460.19 (10% will still need H.460.19).

Simon

At 04:57 PM 3/06/2007, you wrote:
>Hi Simon,
>
>Thank you for this information.
>But there are already recommendations H.460.17, H.460.18 and H.460.19 for
>NAT traversal in H.323. Is your proposal concerning a different approach
>than H.460.x and if yes:
>Why are you using a different approach?
>Are there drawbacks in the current proposals H.460.x?
>
>Michael
>
>
>-----Original Message-----
>From: voipsec-bounces at voipsa.org [mailto:voipsec-bounces at voipsa.org] On
>Behalf Of Simon Horne
>Sent: Monday, June 04, 2007 10:50 AM
>To: voipsec at voipsa.org
>Subject: [VOIPSEC] P2Pnat Media - A H.323 alternative to ICE
>
>
>Guys
>
>This mailing has been quite for a while so I thought I'd liven things up...
>:-)
>
>A few months back I submitted a proposal to the ITU to extend H.323 NAT
>traversal capabilities to allow media to flow directly between Nated H.323
>clients rather than requiring the media to always be proxied. Basically an
>intelligent H.323 alternative to ICE
>
>An overview of the proposal and relevant documents can be found here.
>www.pacphone.com/p2pnat.html
>
>The proposal has been tested and incorporated into PacPhone windows secure
>audio/video softphone www.pacphone.com and the source code has been
>released open source and will be included as part of the GnuGk
>www.gnugk.org gatekeeper project (both of which I assist in
>maintaining).  You are free to test the proposal, both the softphone and
>the gatekeeper (windows installer (no vista), source code for linux) are
>freely available for download from the PacPhone website.
>
>If anyone has any comments and feedback (throwing knives is ok too ;-) ) I
>would be happy to discuss any aspects of the proposal.
>
>Simon
>
>
>
>_______________________________________________
>Voipsec mailing list
>Voipsec at voipsa.org
>http://voipsa.org/mailman/listinfo/voipsec_voipsa.org