Received: from [127.0.0.1] (helo=stiedprmman1.va.neustar.com) by megatron.ietf.org with esmtp (Exim 4.43) id 1FYRV4-0005CL-I9; Tue, 25 Apr 2006 13:38:58 -0400 Received: from [10.91.34.44] (helo=ietf-mx.ietf.org) by megatron.ietf.org with esmtp (Exim 4.43) id 1FYRV3-0005CG-Oc for avt@ietf.org; Tue, 25 Apr 2006 13:38:57 -0400 Received: from mx.cbeyond.net ([66.180.96.58] helo=mx.cbeyond.com) by ietf-mx.ietf.org with esmtp (Exim 4.43) id 1FYRV2-0005Aw-DR for avt@ietf.org; Tue, 25 Apr 2006 13:38:57 -0400 Received: from [64.238.103.215] (port=2278 helo=telws116) by mx.cbeyond.com with asmtp (Exim 4.34) id 1FYQYy-0004Kz-LF for avt@ietf.org; Tue, 25 Apr 2006 12:38:56 -0400 From: "Alan Clark" To: "'IETF AVT WG'" Date: Tue, 25 Apr 2006 13:38:52 -0400 Organization: Telchemy MIME-Version: 1.0 X-Mailer: Microsoft Office Outlook, Build 11.0.5510 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Thread-Index: AcZojxtmeMh5ztvmRnK13pPruiXmDg== X-Spam-Score: 0.1 (/) X-Scan-Signature: 057ebe9b96adec30a7efb2aeda4c26a4 Subject: [AVT] Open source ITU-T G.1050 IP impairment simulation/ emulation software X-BeenThere: avt@ietf.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: alan.d.clark@telchemy.com List-Id: Audio/Video Transport Working Group List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============2024252332==" Errors-To: avt-bounces@ietf.org Message-Id: This is a multi-part message in MIME format. --===============2024252332== Content-Type: multipart/alternative; boundary="----=_NextPart_000_009D_01C6686D.99851EC0" This is a multi-part message in MIME format. ------=_NextPart_000_009D_01C6686D.99851EC0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit AVT participants may be interested in the new ITU-T G.1050 / TIA 921 IP impairment simulation/emulation model. The model uses an impulse driven time series model to emulate the packet delays introduced by a network "stage", which may be a LAN, access router etc. and network stages can be cascaded to represent a network scenario. This approach generates fairly reaslistic IP impairments vs traditional network emulators and is hence useful for testing packet voice and video systems. Telchemy developed the original algorithm for this and also developed the reference implementation associated with the TIA and ITU projects. We decided to make this available free of any Telchemy IPR and also to make the source code freely available; several companies have also developed commercial network emulators that use this algorithm. Obviously, if anyone would like copies of the associated TIA and ITU standards they would need to purchase these from TIA and ITU respectively. The software and some documentation is available on www.telchemy.com/telsim.html - we would welcome technical comments related to this software, and would appreciate feedback on applications. Alan Clark Telchemy ------=_NextPart_000_009D_01C6686D.99851EC0 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
AVT participants may be interested in the = new ITU-T=20 G.1050 / TIA 921 IP impairment simulation/emulation model.  The model uses an impulse = driven time=20 series model to emulate the packet delays introduced by a network = "stage", which=20 may be a LAN, access router etc.  = and=20 network stages can be cascaded to represent a network scenario.  = This=20 approach generates fairly reaslistic IP impairments vs traditional = network=20 emulators and is hence useful for testing packet voice and video=20 systems.
 
Telchemy developed = the original=20 algorithm for this and also developed=20 the reference implementation associated with the TIA and ITU = projects.  We=20 decided to make this available free of any Telchemy IPR and also to make the = source code=20 freely available; several companies = have also=20 developed commercial network emulators that use this = algorithm. =20 Obviously, if anyone would like copies of the associated TIA and ITU = standards=20 they would need to purchase these from TIA and ITU = respectively.   The=20 software and some documentation is available on www.telchemy.com/telsim.html - = we would=20 welcome technical comments related to this software, and would = appreciate=20 feedback on applications. 
 
 
Alan = Clark
Telchemy
 
 
------=_NextPart_000_009D_01C6686D.99851EC0-- --===============2024252332== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Audio/Video Transport Working Group avt@ietf.org https://www1.ietf.org/mailman/listinfo/avt --===============2024252332==--