Craig I think woomera is a fantastic idea in being able to use a text base external channel to control multi-device, multi-protocol bridging. It's simple easy and I liked it the first time I saw it a couple of years back I certainly hope its successful. Simon -----Original Message----- From: Craig Southeren [mailto:craigs@postincrement.com] Sent: Wednesday, 7 November 2007 11:40 AM To: Simon Horne Cc: bxg; h323plus@lists.packetizer.com; Opalvoip-devel@lists.sourceforge.net Subject: Re: [h323plus] OpalCall Concept Question Simon Horne wrote: ..deleted

Hi all,

I have just read opal code for a while. The concept of OpalCall puzzles me. The OpalCall is not existed in OpenH323 project. It's easy to think OpalCall as a gateway between H.323 and SIP connection, however how does this concept applied to OpenMCU. In the conference environment, How can OpalCall represent a conference or in the other words, how to implement conference using OPAL stack?

Can you give me some advice�� Thks.

There is a new version of OpenMCU that uses the same base code, but uses a protocol called Woomera to seperate the MCU functions from the underlyng protocol. So far, it supports H.323, SIP and raw RTP and SRTP. In raw RTP ot SRTP mode, it can support 1000 simultaneous clients. Right now, it is audio-only but video functionality is being worked on. See the www.woomeravoip.org site for more information Craig -- ----------------------------------------------------------------------- Craig Southeren Post Increment �C VoIP Consulting and Software craigs@postincrement.com.au www.postincrement.com.au Phone: +61 243654666 ICQ: #86852844 Fax: +61 243656905 MSN: craig_southeren@hotmail.com Mobile: +61 417231046 Jabber: craigs@jabber.org "Science is the poetry of reality." Richard Dawkins

Craig As you are probably aware we will be taking the existing openMCU in a slightly different direction. Having the conference controlled from within the conference itself. Using the recently added H.230 conference control support in h323plus to be able to use H.245 generic messages to assign a chair who can invite/eject users, transfer chair controls to others. Member lists can be seen by everyone. A member can be assigned the floor who has limited control like being able to takeover the MCU display and switch the video input from the primary video to the secondary app share input for presentations. Since this developed with the existing openMCU, implementations should be able to migrate/upgrade to include these new features. Similar but different ideas on direction. :-) Simon -----Original Message----- From: Craig Southeren [mailto:craigs@postincrement.com] Sent: Wednesday, 7 November 2007 2:42 PM To: Simon Horne Cc: bxg; h323plus@lists.packetizer.com; Opalvoip-devel@lists.sourceforge.net Subject: Re: [h323plus] OpalCall Concept Question Simon Horne wrote:

Craig

I think woomera is a fantastic idea in being able to use a text base external channel to control multi-device, multi-protocol bridging. It's simple easy and I liked it the first time I saw it a couple of years back I certainly hope its successful.

It's been working very well for the customers who have it deployed :) Craig ----------------------------------------------------------------------- Craig Southeren Post Increment �C VoIP Consulting and Software craigs@postincrement.com.au www.postincrement.com.au Phone: +61 243654666 ICQ: #86852844 Fax: +61 243656905 MSN: craig_southeren@hotmail.com Mobile: +61 417231046 Jabber: craigs@jabber.org "Science is the poetry of reality." Richard Dawkins

Craig OpenMCU only supports basic H.245 notifications of entry and exit. The H.230 standard interface (which is really made up of H.230/H.243/T.124) extends that so the member can request and retrieve the full list of members inside the conference as well as all the conference controls mentioned below. Since it is all standard H.323 (or generic extensions) it can be deployed mixed and matched with existing H.323 equipment. There is a standard conferenceControl capability which is negotiated on connection so if the endpoint supports conference controls then it can utilise these controls, if not then the endpoint can still participate in the conference but does not receive any notifications and operates like an existing OpenMCU member. So really it's an interoperable functional upgrade of OpenMCU. Giving it far greater functionality without losing any of it existing deployments or code base. Woomera a completely new animal, its a fantastic proprietry add-on solution and it does solve very important and varied issues way way beyond OpenMCU. I guess what I'm saying is that the OpenMCU development is incremental and standard (in the most part) while Woomera is new and proprietry (in the most part). Not saying either is better just they are different. :) Simon -----Original Message----- From: Craig Southeren [mailto:craigs@postincrement.com] Sent: Wednesday, 7 November 2007 5:34 PM To: Simon Horne Cc: bxg; h323plus@lists.packetizer.com; Opalvoip-devel@lists.sourceforge.net Subject: Re: [h323plus] OpalCall Concept Question Simon Horne wrote:

Craig

As you are probably aware we will be taking the existing openMCU in a slightly different direction. Having the conference controlled from within the conference itself. Using the recently added H.230 conference control support in h323plus to be able to use H.245 generic messages to assign a chair who can invite/eject users, transfer chair controls to others. Member lists can be seen by everyone. A member can be assigned the floor who has limited control like being able to takeover the MCU display and switch the video input from the primary video to the secondary app share input for presentations. Since this developed with the existing openMCU, implementations should be able to migrate/upgrade to include these new features.

Not sure why you think it is different. OpenMCU already has low level support for some of the H.245 conference control messages to implement these functions And I'm already implementing these kinds of functions in the Woomera-based MCU Craig ----------------------------------------------------------------------- Craig Southeren Post Increment �C VoIP Consulting and Software craigs@postincrement.com.au www.postincrement.com.au Phone: +61 243654666 ICQ: #86852844 Fax: +61 243656905 MSN: craig_southeren@hotmail.com Mobile: +61 417231046 Jabber: craigs@jabber.org "Science is the poetry of reality." Richard Dawkins