March 1999 - sg16-avd - lists.packetizer.com

Re: H.323/VoIP QoS
by Roy, Radhika R, ALCOO 03 Mar '99

03 Mar '99

Hi Everyone: I support this effort. In fact, Maeng and I had a very brief talk in the last Monterey meeting related to the QOS aspects of H.323. Recent AT&T, VTEL, and TIPHON contributions reflect many aspects of H.323/VoIP QOS. I also got encouraging responses when we talked about QOS related issues to many other companies. I guess that all of us would be benefited if the H.323/VoIP QOS aspects are satisfactorily addressed. Hope that the QOS activity group will be formed. Thanks, Radhika R. Roy AT&T (732) 420 1580 rrroy(a)att.com > -----Original Message----- > From: Joon Maeng [SMTP:Joon_Maeng@VTEL.COM] > Sent: Wednesday, March 03, 1999 11:40 AM > To: ITU-SG16(a)MAILBAG.INTEL.COM > Subject: H.323/VoIP QoS > > Greetings! My name is Joon Maeng. I work for VTEL Corp in USA. I've > talked to > several companies while I was attending ITU and IETF meetings about > establishing > an ad-hoc group to address QoS (Quality of Service) issues in TRANSPORTING > REAL-TIME TRAFFICS in the packet switched network, especially in the IP > network. > I was very encouraged by responses from those companies. Most of them > agreed > that lack of QoS support for real-time traffics was one of major barriers > in > deploying H.323/VoIP products and the H.323 industry would benefit by > having a > QoS activity group. I would like to ask if your company would be > interested in > the activities described in the following: > > Proposed name of the group: H.323/VoIP QoS Activity Group. > > Motivation: ITU defined a good conference standard, H.323, for the packet > network. IETF is actively defining QoS standards for the IP network. The > deployment of H.323/VoIP products has been slow partially due to lack of > QoS > supports in current IP network. The H.323/VoIP industry shall work > together to > access the issues and provide solutions for the users. > > Proposed charter of the group: > - Assess QoS issues in transporting real-time traffics (calls with > long-duration > compared to web-access) in the IP network, > - Find the solutions to resolve issues, > - Execute solutions via various processes such as building consensus on > various > QoS solutions among participants, > submitting recommendations to standardization bodies if needed, and > facilitating inter-operablity testing between QoS standards and > application > standards, > - and education, promotion, etc. > > I would expect the final charter and the structure of the group will be > determined by the participants and their interests. I would say that > everything is open at this time except that the industry shall look at the > QoS > issues seriously for real-time traffics. I'd like to clarify that the > proposed > group is not a group to standardize the QoS. It is a group or a forum > that is > interested in helping and promoting the real-time QoS for H.323/VoIP > industry > through various methods (to be determined). I plan to set up an email > reflector for the initial discussions among participants and decide the > following steps based on the discussions. Please email me (joon_maeng@ > vtel.com) > if you and your company would be interested in joining the initial talks > via > email reflector. Your comments and suggestions will be greatly > appreciated. > Regards, > Joon

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Re: H.323/VoIP QoS
by Tony Crossman 03 Mar '99

03 Mar '99

Joon, please include me in any further discussions. thanks Tony Crossman PictureTel At 10:40 AM 3/3/99 -0600, Joon Maeng wrote: >Greetings! My name is Joon Maeng. I work for VTEL Corp in USA. I've talked to >several companies while I was attending ITU and IETF meetings about establishing >an ad-hoc group to address QoS (Quality of Service) issues in TRANSPORTING >REAL-TIME TRAFFICS in the packet switched network, especially in the IP network. >I was very encouraged by responses from those companies. Most of them agreed >that lack of QoS support for real-time traffics was one of major barriers in >deploying H.323/VoIP products and the H.323 industry would benefit by having a >QoS activity group. I would like to ask if your company would be interested in >the activities described in the following: > >Proposed name of the group: H.323/VoIP QoS Activity Group. > >Motivation: ITU defined a good conference standard, H.323, for the packet >network. IETF is actively defining QoS standards for the IP network. The >deployment of H.323/VoIP products has been slow partially due to lack of QoS >supports in current IP network. The H.323/VoIP industry shall work together to >access the issues and provide solutions for the users. > >Proposed charter of the group: >- Assess QoS issues in transporting real-time traffics (calls with long-duration >compared to web-access) in the IP network, >- Find the solutions to resolve issues, >- Execute solutions via various processes such as building consensus on various >QoS solutions among participants, > submitting recommendations to standardization bodies if needed, and >facilitating inter-operablity testing between QoS standards and application > standards, >- and education, promotion, etc. > >I would expect the final charter and the structure of the group will be >determined by the participants and their interests. I would say that >everything is open at this time except that the industry shall look at the QoS >issues seriously for real-time traffics. I'd like to clarify that the proposed >group is not a group to standardize the QoS. It is a group or a forum that is >interested in helping and promoting the real-time QoS for H.323/VoIP industry >through various methods (to be determined). I plan to set up an email >reflector for the initial discussions among participants and decide the >following steps based on the discussions. Please email me (joon_maeng@ vtel.com) >if you and your company would be interested in joining the initial talks via >email reflector. Your comments and suggestions will be greatly appreciated. >Regards, >Joon > > > > > ********************************************* Antony Crossman PictureTel Corporation 100 Minuteman Road, Andover, MA 01810, USA Tel. +1 (978) 623 4557 Fax. +1 (978) 749 2804 email. tonyc @pictel.com *********************************************

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H.323 multipoint conference with consultation calls?
by Hans Andersson E (ERA) (by way of Sakae OKUBO) 03 Mar '99

03 Mar '99

Hello! I have a question regarding multipoint conferences in H.323. In the H.323 standard, it seems as if the "Conference Invite" functionality (see 8.4.3.5) requires that calling party (Endpoint 1) already before making the call set-up to Endpoint 2 (E2) must have decided that E2 shall be brought into the conference as a new member. So it is not possible for E1 to make an enquiry (consultation) call to see if E2 has the time to participate, has the required competence or whatever the criterion for participation might be. But, when I look at the Draft new recommendation H.450.8 "Conference out of Consultation Supplementary Service for H.323 (SS-CoC)" (February 8, 1999), it seems to have what I am looking for. According to this recommendation, it is possible to make a call, put the called (or calling of course) party on hold, make a consultation call and at that moment (after talking to the E2 party) decide to create a conference. But how do I do if I want to expand this to yet another party in the same way? According to H.450.8 (7.4.1), I shall use the H.323 "conference invite". That would mean that I have to use different principles when I go from a 2-party to a 3-party call, than when I go from an N-party to an (N+1)-party call. Does it have to be like that? I really think that it would be nice if the H.450.8 recommendation can be expanded to cover also cases when the held call is a conference. Currently, it only covers the case where the held call is to to a remote user. I would be glad to get your opinion regarding this. Best regards Hans Andersson _____________________________________________________________________ Hans Andersson System Design GSM Systems Tel: +46 8 757 22 38 Ericsson Radio Systems AB Fax: +46 8 404 95 30 F $B3SSH (Batan 6, Kista Mob: +46 70 533 91 12 S-164 80 STOCKHOLM Hans.E.Andersson(a)era.ericsson.se _____________________________________________________________________

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VoIP QOS!
by long keping 03 Mar '99

03 Mar '99

Joon, please include me in any further discussions. thanks Long keping lkp(a)bupt.edu.cn

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Re: H.GCP Audio Call
by Roni Even 03 Mar '99

03 Mar '99

Bryan, Please count me in on the call. Roni Even ********************************************** Roni Even VP Product Marketing Accord Video Telecommunication Email: roni_e(a)accord.co.il Tel: +972-3-9251412 Fax: +972-3-9211571 *************************************************** > -----Original Message----- > From: Bryan Hill [SMTP:bhill@VIDEOSERVER.COM] > Sent: Monday, March 01, 1999 9:37 PM > To: ITU-SG16(a)MAILBAG.INTEL.COM > Subject: H.GCP Audio Call > > Colleagues, > > I would like to invite you to participate in audio call on Thursday > March > 4th from 11AM until 1PM EST to discuss H.GCP. The call details are as > follows: > > Calls from outside the US: 312-470-7273 > Calls from within the US: 888-847-7598 > Passcode: BryanHill > Confirmation number: 5193957 > > Please respond to me directly to reserve a port for this call (where > ever > possible please try to minimize port requirements by sharing a port > with a > colleague). > > The main purpose of this initial call will be to review requirements > and > terminology for H.GCP which were discussed in Monterey. I have been > editing > these sections and will make them available on the ptel SG16 ftp site > no > later than tomorrow 3/2. The second purpose of the call is to > identify > other areas that need to be discussed in subsequent audio calls. An > initial > pass of topics is listed below. I would like to solicit volunteers to > submit written contribution in each of the areas identified and use > these > submissions as a basis for discussing topics in future audio calls. > In this > manner I hope to scope our discussion to specific technical topics and > combine the benefits from MDCP and MGCP approaches into H.GCP. > > > 1) Control model > a) Controller to gateway associations > b) Controller to internal gateway entity associations > c) Failover > d) Security > 2) Connection model > a) Controllable entities > b) Controllable entity properties > 3) Commands > a) Types > b) Parameters > c) Acknowledgement styles/sequencing > 4) Messages (i.e.-command packaging) > 5) Message Encoding > 6) Resource management > 7) Scripting/Packages > 8) Interface C protocol (Q.931/Q.764) > 9) Interface B protocol (Q.931 ) > > > Best Regards, > Bryan > _________________________________________________________ > Bryan Hill > VideoServer Inc. > (781) 505-2159 > <mailto:bhill@videoserver.com>

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Re: Change of address
by Eli Doron 03 Mar '99

03 Mar '99

Hi Jim, Good luck in your new job. Eli Doron RADVision -----Original Message----- From: Jim Toga [SMTP:jim.toga@intel.com] Sent: Sunday, February 28, 1999 10:50 PM To: ITU-SG16(a)mailbag.cps.intel.com Subject: Change of address After today I am joining an IP telephony startup. For any directed email to me, please use the following address - the Intel address will be deactivated. jim.toga(a)metatel.com (my response time might be a little 'spotty' over the next couple of weeks) Best Regards, jimt. +1-503-264-8816(voice) Intel - Hillsboro, OR mailto:jim.toga@intel.com mailto:james.toga@ties.itu.int PGP keyID 36 07 86 49 7D 74 DF 57 50 CB BA 32 08 9C 7C 41

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Re: Liaison from ITU Question 21/15
by Douglas Clowes 02 Mar '99

02 Mar '99

Bob, What's your point? :) Looking at the various questions, "relationships" describe what is wanted from the group, rather than the entire scope of their operation. If your concern relates to SG13 and their role with IP, ITU central seems to support them in that role. Study Group 16's "Area of Responsibility" is, unfortunately, "For further study" - it should probably be "studied": http://www.itu.int/ITU-T/com16/area_resp.html Also, in the "Questions under study", there is no mention of IP, and scant reference to the Internet: http://www.itu.int/ITU-T/com16/questions-text.html Study Group 13's "Home Page" includes "Lead Study Group on General network aspects, Global Information Infrastructures (GII), Broadband ISDN and IP related aspects.": http://www.itu.int/ITU-T/com13/ Study Group 13's "Questions under study" has several references to IP: http://www.itu.int/ITU-T/com13/questions-text.html It would appear that SG16 is involved in "Packet Networks", of which the Internet and IP is but one. A valid question would focus on whether the 21/15 question should restrict itself to IP, or cover packet networks in general. Will their recommendations only apply to SG16 equipment when connected to an IP network? SG16 should not lose sight of the other packet network protocols. How does this concept impact on H.gcp? Douglas At 05:49 1999-03-02 -0800, Callaghan, Robert wrote: >This is an interesting view of the IP world > >SG 16 - speech coding and interworking protocols >SG 13 - lead group on overall IP issues >SG 11 - signaling issues >SG 4 - administration >IETF - sigtran, megaco and iptel Working Groups > >I don't think that this is our view, is it? > >Bob

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Re: H.GCP Audio Call
by Bryan Hill 02 Mar '99

02 Mar '99

Colleagues, The attached word doc contains my latest pass at H.GCP requirements, terminology and scope for the Thursday call. Please review then in that order, the scope section is still under construction. Regards, Bryan <<HGCPREQ.ZIP>> -----Original Message----- From: Bryan Hill [SMTP:bhill@VIDEOSERVER.COM] Sent: Monday, March 01, 1999 2:37 PM To: ITU-SG16(a)mailbag.cps.intel.com Subject: H.GCP Audio Call Colleagues, I would like to invite you to participate in audio call on Thursday March 4th from 11AM until 1PM EST to discuss H.GCP. The call details are as follows: Calls from outside the US: 312-470-7273 Calls from within the US: 888-847-7598 Passcode: BryanHill Confirmation number: 5193957 Please respond to me directly to reserve a port for this call (where ever possible please try to minimize port requirements by sharing a port with a colleague). The main purpose of this initial call will be to review requirements and terminology for H.GCP which were discussed in Monterey. I have been editing these sections and will make them available on the ptel SG16 ftp site no later than tomorrow 3/2. The second purpose of the call is to identify other areas that need to be discussed in subsequent audio calls. An initial pass of topics is listed below. I would like to solicit volunteers to submit written contribution in each of the areas identified and use these submissions as a basis for discussing topics in future audio calls. In this manner I hope to scope our discussion to specific technical topics and combine the benefits from MDCP and MGCP approaches into H.GCP. 1) Control model a) Controller to gateway associations b) Controller to internal gateway entity associations c) Failover d) Security 2) Connection model a) Controllable entities b) Controllable entity properties 3) Commands a) Types b) Parameters c) Acknowledgement styles/sequencing 4) Messages (i.e.-command packaging) 5) Message Encoding 6) Resource management 7) Scripting/Packages 8) Interface C protocol (Q.931/Q.764) 9) Interface B protocol (Q.931 ) Best Regards, Bryan _________________________________________________________ Bryan Hill VideoServer Inc. (781) 505-2159 <mailto:bhill@videoserver.com>

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Re: H.GCP Audio Call
by Katrina C. Hopkins 02 Mar '99

02 Mar '99

Bryan, Please count me in for the audio call on Thursday. Thanks, Katrina "Great spirits have always encountered violent opposition from mediocre minds" - Albert Einstein __________________________________________ Katrina C. Hopkins 8670 Georgia Avenue Silver Spring, Maryland 20910 USA 301 608-2076 / 301 608-3547 Fax Senior Member Technical Staff Multimedia & Video Standards Bell Atlantic Technology & Engineering From: ITU-SG16(a)mailbag.cps.intel.com AT INTERNET on 03/01/99 05:22 PM To: KATRINA C. HOPKINS/EMPL/MD/Bell-Atl, ITU-SG16(a)mailbag.cps.intel.com AT INTERNET@CCDOMAIN cc: Subject: H.GCP Audio Call Colleagues, I would like to invite you to participate in audio call on Thursday March 4th from 11AM until 1PM EST to discuss H.GCP. The call details are as follows: Calls from outside the US: 312-470-7273 Calls from within the US: 888-847-7598 Passcode: BryanHill Confirmation number: 5193957 Please respond to me directly to reserve a port for this call (where ever possible please try to minimize port requirements by sharing a port with a colleague). The main purpose of this initial call will be to review requirements and terminology for H.GCP which were discussed in Monterey. I have been editing these sections and will make them available on the ptel SG16 ftp site no later than tomorrow 3/2. The second purpose of the call is to identify other areas that need to be discussed in subsequent audio calls. An initial pass of topics is listed below. I would like to solicit volunteers to submit written contribution in each of the areas identified and use these submissions as a basis for discussing topics in future audio calls. In this manner I hope to scope our discussion to specific technical topics and combine the benefits from MDCP and MGCP approaches into H.GCP. 1) Control model a) Controller to gateway associations b) Controller to internal gateway entity associations c) Failover d) Security 2) Connection model a) Controllable entities b) Controllable entity properties 3) Commands a) Types b) Parameters c) Acknowledgement styles/sequencing 4) Messages (i.e.-command packaging) 5) Message Encoding 6) Resource management 7) Scripting/Packages 8) Interface C protocol (Q.931/Q.764) 9) Interface B protocol (Q.931 ) Best Regards, Bryan _________________________________________________________ Bryan Hill VideoServer Inc. (781) 505-2159 <mailto:bhill@videoserver.com>

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Re: Liaison from ITU Question 21/15
by Callaghan, Robert 02 Mar '99

02 Mar '99

This is an interesting view of the IP world SG 16 - speech coding and interworking protocols SG 13 - lead group on overall IP issues SG 11 - signaling issues SG 4 - administration IETF - sigtran, megaco and iptel Working Groups I don't think that this is our view, is it? Bob <<q21_text.html>> ------------------------------------------------------------------ Robert Callaghan Siemens Information & Communication Networks Tel: +1.561.997.3756 Fax: +1.561.997.3403 Email: Robert.Callaghan(a)ICN.Siemens.com ------------------------------------------------------------------ -----Original Message----- From: Glen Freundlich [mailto:ggf@lucent.com] Sent: Monday, March 01, 1999 3:57 PM To: ITU-SG16(a)mailbag.cps.intel.com Subject: Liaison from ITU Question 21/15 Attached is a liaison statement from Question 21/15, of which Jerry Skene is the rapporteur, sent in response to a liaison from Q14 regarding the text of Q21/15. Mr. Skene's contact information is: Jerry Skene | Tellabs, Inc. Director, | 45085 University Drive International Standards | Ashburn, VA 20147.2745 tel: +1 703 724-7302 | URL: www.tellabs.com fax: +1 703 724-7202 | email:jerry.skene@tellabs.com -- Glen Freundlich ggf(a)lucent.com Lucent Technologies office: +1 303 538 2899 11900 N. Pecos fax: +1 303 538 3907 Westminster, Colorado 80234 USA

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