January 2000 - sg16-avd - lists.packetizer.com

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by Dave Walker 17 Jan '00

17 Jan '00

This person no longer works at Mitel. Please remove this individual from your mailing list. Thank-You Unix Server Support

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Re: H225.0 RAS/AnnexG related queries
by Michael Fortinsky 17 Jan '00

17 Jan '00

Hi Krishna, See my answers below... > Hi ..!! > I have a few queries regarding H.225.0 RAS/AnnexG: > 1. AnnexGCommonInfo does not contain Protocol Identifier. Why is it not > required for AnnexG messages? > Keeping in view, the possible future versions of AnnexG; how shall a > Border Element, on receiving a PDU from some other Border Element know the > version of protocol being used by the sender of the PDU? Also, how does the > sender ascertain which version of protocol the receiver understands? e.g. if > an element is added in version 3 of the protocol, and the recepient can > handle upto version 7, how can it be ascertained that the peer entity would > understand the information sent/received? > Actually, Annex G does has a Protocol Identifier - it is the "version" field that is part of the common message info and is included in every message: AnnexGCommonInfo ::= SEQUENCE { sequenceNumber INTEGER (0..65535), version AnnexGVersion, hopCount INTEGER (1..255), replyAddress SEQUENCE OF TransportAddress OPTIONAL, -- Must be present in request integrityCheckValue ICV OPTIONAL, tokens SEQUENCE OF ClearToken OPTIONAL, cryptoTokens SEQUENCE OF CryptoH323Token OPTIONAL, nonStandard SEQUENCE OF NonStandardParameter OPTIONAL, ..., serviceID ServiceID OPTIONAL } In the first version of Annex G, it is defined as: AnnexGVersion ::= OBJECT IDENTIFIER -- shall be set to -- {itu-t (0) recommendation (0) h(8) 2250 annex (1) g (7) version (0) 1} > 2. Why is Sequence Number from 0 to 65535 for AnnexG, while for RAS its from > 1 to 65535 (ASN.1 Message Syntax)? > Also, in section 7.17 (Message Not Understood) of H.225.0 it is >mentioned that RequestSeqNum shall be zero if the message cannot be decoded; > PDU encoding shall fail in such a case. > You're right. I am guessing that nobody ever noticed the discrepancy between H.225.0 (RAS) and Annex G. From the section you quote (H.225.0, section 7.17)), specifying the sequence number to zero seems to be a bug in the standard, since it defines the sequence number as: RequestSeqNum ::= INTEGER (1..65535) > Regards > Krishna Michael Fortinsky ----------------------------------------------------------------- Senior Program Manager, IP Telephony Group, VocalTec Communications Ltd. Email: mike(a)vocaltec.com Tel: 972 9 9707768 Fax: 972 9 9561867

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H225.0 RAS/AnnexG related queries
by Krishna Kr Banka 17 Jan '00

17 Jan '00

Hi ..!! I have a few queries regarding H.225.0 RAS/AnnexG: 1. AnnexGCommonInfo does not contain Protocol Identifier. Why is it not required for AnnexG messages? Keeping in view, the possible future versions of AnnexG; how shall a Border Element, on receiving a PDU from some other Border Element know the version of protocol being used by the sender of the PDU? Also, how does the sender ascertain which version of protocol the receiver understands? e.g. if an element is added in version 3 of the protocol, and the recepient can handle upto version 7, how can it be ascertained that the peer entity would understand the information sent/received? 2. Why is Sequence Number from 0 to 65535 for AnnexG, while for RAS its from 1 to 65535 (ASN.1 Message Syntax)? Also, in section 7.17 (Message Not Understood) of H.225.0 it is mentioned that RequestSeqNum shall be zero if the message cannot be decoded; PDU encoding shall fail in such a case. Regards Krishna

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[Fwd: Re: FW: I-D ACTION:draft-singh-sip-h323-00.txt,.ps]
by Edgar Martinez [1] 14 Jan '00

14 Jan '00

FYI -------- Original Message -------- Subject: Re: FW: I-D ACTION:draft-singh-sip-h323-00.txt,.ps Date: Fri, 14 Jan 2000 11:52:20 +0100 From: Paul Sijben <sijben(a)LUCENT.COM> Reply-To: Paul Sijben <sijben(a)LUCENT.COM> Organization: Lucent technologies, The Netherlands To: TIPHON(a)LIST.ETSI.FR References: <E39024226822D311BC880008C77318A1816106@oteis01nok> I have been reading this draft and have been both puzzled and pleasantly surprised. I have been puzzled over some of the statements that are made on H.323, I do not recall that there is a limit on the sample frequency on G711 in H.323, the draft claims its fixed to 8000. (Could someone resolve this?) The authors also seem to forget that there is H.323v4 now as well as the FastStart option... so the resulting call flow uses very many message exchanges, this is not necessary is it??? I also have been puzzled by the authors proposing to make a SIP-H.323 gateway whereby the H.323 side looks like an H.323 terminal, in some cases an H.323 gatekeepr seems more appropriate. I have been pleasantly surprised in that the authos basically use the same method of interworking as we have been looking at in the DTS02003 information flows. So either we are all wrong or all right :-) Paul Shore Melinda wrote: > > For those who don't receive IETF announcements ... > > Melinda > -- > Melinda Shore > Member of the Scientific Staff > Nokia IP Telephony > 127 West State Street "Software longa, > Ithaca, NY 14850 hardware brevis" > +1 607 273 0724 (office) > +1 607 275 3610 (fax) > +1 607 227 4096 (mobile) > melinda.shore(a)nokia.com > > -----Original Message----- > From: EXT Internet-Drafts(a)ietf.org [mailto:Internet-Drafts@ietf.org] > Sent: Wednesday, January 12, 2000 6:40 AM > Subject: I-D ACTION:draft-singh-sip-h323-00.txt,.ps > > A New Internet-Draft is available from the on-line Internet-Drafts > directories. > > Title : Interworking Between SIP/SDP and H.323 > Author(s) : K. Singh, H. Schulzrinne > Filename : draft-singh-sip-h323-00.txt,.ps > Pages : 46 > Date : 11-Jan-00 > > This document describes the interworking between SIP and H.323, > including the translation between H.245 and SDP. We list general > requirements for such a translation and a solution which meets those > requirements. We describe the call setup via message flows and pseudo > code. > > A URL for this Internet-Draft is: > http://www.ietf.org/internet-drafts/draft-singh-sip-h323-00.txt > > Internet-Drafts are also available by anonymous FTP. Login with the username > "anonymous" and a password of your e-mail address. After logging in, > type "cd internet-drafts" and then > "get draft-singh-sip-h323-00.txt". > > A list of Internet-Drafts directories can be found in > http://www.ietf.org/shadow.html > or ftp://ftp.ietf.org/ietf/1shadow-sites.txt > > Internet-Drafts can also be obtained by e-mail. > > Send a message to: > mailserv(a)ietf.org. > In the body type: > "FILE /internet-drafts/draft-singh-sip-h323-00.txt". > > NOTE: The mail server at ietf.org can return the document in > MIME-encoded form by using the "mpack" utility. To use this > feature, insert the command "ENCODING mime" before the "FILE" > command. To decode the response(s), you will need "munpack" or > a MIME-compliant mail reader. Different MIME-compliant mail readers > exhibit different behavior, especially when dealing with > "multipart" MIME messages (i.e. documents which have been split > up into multiple messages), so check your local documentation on > how to manipulate these messages. > > Below is the data which will enable a MIME compliant mail reader > implementation to automatically retrieve the ASCII version of the > Internet-Draft. > > --------------------------------------------------------------------------- > > Subject: > Date: Wed, 12 Jan 2000 08:23:01 -0600 > > --------------------------------------------------------------------------- > > ATT19699Name: ATT19699 > Type: unspecified type (application/octet-stream) > > Access-Type: anon-ftp > Document Info: Site: internet-drafts > Mode: ftp.ietf.org -- Paul Sijben Tel:+31 356874774 Lucent Technologies Message:+31 208702874 Forward Looking Work Fax: +31 208702874 Huizen, The Netherlands http://voip.nl.lucent.com/~sijben (internal) ------------------------------------------------------------------- Mail archive for TIPHON can be browsed at the following url : http://www.etsi.org/tiphon/mailing.htm -------------------------------------------------------------------

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H.248 White Contribution
by Chip Sharp 13 Jan '00

13 Jan '00

I cannot find COM 16-107 (draft Recommendation H.248 white contribution for decision) in the Contributions directory of the official SG16 web site (http://www.itu.int/itudoc/itu-t/com16/contr/) I understand that this is on the avc-site, but since it is up for decision I assume the official contribution would show up on the SG16 page. Thanks, Chip Support NetAid! http://www.netaid.org -------------------------------------------------- Chip Sharp Consulting Engineering Cisco Systems Telco Bio-region Reality - Love it or Leave it. --------------------------------------------------

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H.323 Annex M
by Francois Audet 12 Jan '00

12 Jan '00

I have uploaded the current draft for H.323 Annex M (Tunnelling of signalling protocols - QSIG) in the incoming directory as d-H323M.doc. ----- François Audet Tel:+1 408 565 5675 mailto:audet@NortelNetworks.com <mailto:audet@NortelNetworks.com> Nortel Networks Fax:+1 408 565 2375 http://www.NortelNetworks.com <http://www.nortelnetworks.com/>

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[Fwd: FW: I-D ACTION:draft-singh-sip-h323-00.txt,.ps]
by Edgar Martinez [1] 12 Jan '00

12 Jan '00

fyi -------- Original Message -------- Subject: FW: I-D ACTION:draft-singh-sip-h323-00.txt,.ps Date: Wed, 12 Jan 2000 11:37:28 -0600 From: Shore Melinda <Melinda.Shore(a)NOKIA.COM> Reply-To: Melinda.Shore(a)NOKIA.COM To: TIPHON(a)LIST.ETSI.FR For those who don't receive IETF announcements ... Melinda -- Melinda Shore Member of the Scientific Staff Nokia IP Telephony 127 West State Street "Software longa, Ithaca, NY 14850 hardware brevis" +1 607 273 0724 (office) +1 607 275 3610 (fax) +1 607 227 4096 (mobile) melinda.shore(a)nokia.com -----Original Message----- From: EXT Internet-Drafts(a)ietf.org [mailto:Internet-Drafts@ietf.org] Sent: Wednesday, January 12, 2000 6:40 AM Subject: I-D ACTION:draft-singh-sip-h323-00.txt,.ps A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : Interworking Between SIP/SDP and H.323 Author(s) : K. Singh, H. Schulzrinne Filename : draft-singh-sip-h323-00.txt,.ps Pages : 46 Date : 11-Jan-00 This document describes the interworking between SIP and H.323, including the translation between H.245 and SDP. We list general requirements for such a translation and a solution which meets those requirements. We describe the call setup via message flows and pseudo code. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-singh-sip-h323-00.txt Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-singh-sip-h323-00.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv(a)ietf.org. In the body type: "FILE /internet-drafts/draft-singh-sip-h323-00.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft.

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H.323 mobility: Final draft
by Gilles Delmas 11 Jan '00

11 Jan '00

Status Distribution January 12, 2000 05:54:37 Sent by EMAUO01 The message regarding "H.323 mobility: Final draft" sent on January 12, 2000 05:54:37 was sent by Status Recipient Type To Native Name ITU-SG16(a)MAILBAG.INTEL.COM Foreign Native Name ITU-SG16(a)MAILBAG.INTEL.COM/n/n/nSMTP Recipients Status Reporters Type From Name Domain LOTUS Native Name CN=Gilles Delmas/OU=LIM/OU=RESEARCH/O=PHILIPS@EMEA1 Foreign Native Name CN=Gilles Delmas/OU=LIM/OU=RESEARCH/O=PHILIPS/nEMEA1/n/n Organization PHILIPS Org Unit 1 RESEARCH Org Unit 2 LIM Last Name Delmas First Name Gilles Status 769 Explanation Invalid recipient X.400 Status 769 Explanation Error delivering to SUR003M/M/SERVER/PHILIPS mail5/gillesdelmas.nsf; File truncated - file may have been damaged

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[Fwd: H.323 mobility: Final draft]
by Edgar Martinez [1] 11 Jan '00

11 Jan '00

ooh!! the final draft is MTD-03d.zip not MTD-03b.zip -------- Original Message -------- Subject: H.323 mobility: Final draft Date: Tue, 11 Jan 2000 22:48:58 -0500 From: "Edgar Martinez [1]" <martinze(a)cig.mot.com> Organization: NSS-NAT To: "H.323 Mobility" <ITU-SG16(a)mailbag.cps.intel.com> Dear H.323 mobile ad-hoc group, I have down loaded MTD-03b.zip the H.323 mobile ad-hoc join contribution for Geneva and SGD-01-18-2000.zip for the US SGD meeting on Jan. 18, 2000 meeting in Washington D.C., for US approval of our combined contributions to Geneva. You may pick the documents in: ftp://standard.pictel.com/avc-site/Incoming/H323_Mobility/SG16_Mobility/ or http://people.itu.int/~emartine/temp/SG16-mobility/All_Confernce_Call_meeti… Thank you all for all your help, see you in Geneva. Best Regards, -- Edgar Martinez - Principal Staff Engineer Email mailto:martinze@cig.mot.com FAX 1-847-632-3145 - - Voice 1-847-632-5278 1501 West Shure Drive, Arlington Hgts. IL 60004 Public: TIPHON & Other Stds - http://people.itu.int/~emartine/ Private:TIPHON & Other Stds - http://www.cig.mot.com/~martinze/

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H.323 mobility: Final draft
by Edgar Martinez [1] 11 Jan '00

11 Jan '00

Dear H.323 mobile ad-hoc group, I have down loaded MTD-03b.zip the H.323 mobile ad-hoc join contribution for Geneva and SGD-01-18-2000.zip for the US SGD meeting on Jan. 18, 2000 meeting in Washington D.C., for US approval of our combined contributions to Geneva. You may pick the documents in: ftp://standard.pictel.com/avc-site/Incoming/H323_Mobility/SG16_Mobility/ or http://people.itu.int/~emartine/temp/SG16-mobility/All_Confernce_Call_meeti… Thank you all for all your help, see in Geneva. Best Regards, -- Edgar Martinez - Principal Staff Engineer Email mailto:martinze@cig.mot.com FAX 1-847-632-3145 - - Voice 1-847-632-5278 1501 West Shure Drive, Arlington Hgts. IL 60004 Public: TIPHON & Other Stds - http://people.itu.int/~emartine/ Private:TIPHON & Other Stds - http://www.cig.mot.com/~martinze/

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