August 2008 - h323plus - lists.packetizer.com

OpenMCU Web page not saving data
by Adrien Rudulier 16 Oct '08

16 Oct '08

OpenMCU's webpage isn't saving the configuration data when I change a value. I did a clean ubuntu install with cvs/svn versions of ptlib, h323plus and openmcu. Does anyone know off the top of their head whether it's a problem with openMCU or should I go talk to the guys at OpalVoip about ptlib? -Adrien __________________________________________________________________ Be smarter than spam. See how smart SpamGuard is at giving junk email the boot with the All-new Yahoo! Mail. Click on Options in Mail and switch to New Mail today or register for free at http://mail.yahoo.ca

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Registering with the GnuGK - continued
by Amnon David 03 Sep '08

03 Sep '08

Hard coding the authenticator.Enable (as shown bellow) solves the registration problem. Obviously this is not good - any ideas why authenticator.IsCapability returns the wrong result in the "simple" sample application ? BOOL H323Gatekeeper::OnReceiveGatekeeperConfirm(const H225_GatekeeperConfirm & gcf) { if (!H225_RAS::OnReceiveGatekeeperConfirm(gcf)) return FALSE; PINDEX i; for (i = 0; i < authenticators.GetSize(); i++) { H235Authenticator & authenticator = authenticators[i]; if (authenticator.UseGkAndEpIdentifiers()) authenticator.SetRemoteId(gatekeeperIdentifier); } if (gcf.HasOptionalField(H225_GatekeeperConfirm::e_authenticationMode) && gcf.HasOptionalField(H225_GatekeeperConfirm::e_algorithmOID)) { for (i = 0; i < authenticators.GetSize(); i++) { H235Authenticator & authenticator = authenticators[i]; authenticator.Enable( TRUE /*authenticator.IsCapability(gcf.m_authenticationMode, // <<<< This makes it work gcf.m_algorithmOID)*/); PTRACE(4,"RAS\tAuthenticator " << authenticator.GetName() << (authenticator.IsActive() ? " ACTIVATED" : " disabled")); } }

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Re: [h323plus] Multicast
by Troy 28 Aug '08

28 Aug '08

Thanks for your input Marcos. I have already looked at OpenMCU but it seems to be too different from what is required for a decentralised conference. As I recall, the signalling involved in OpenMCU is the default behaviour of the base classes for the most part. It wasn't clear to me how to change the signalling to identify distributed multicast but I'm still researching this. But the biggest question I have is how difficult it will be to add multicast capability to the library. Is it as simple as joining a multicast group if the network address is a multicast address and having everything else basically just work (same code to send/receive on an established multicast socket as for a UDP unicast socket) or is there more to it than that... maybe some additional management associated with H.323/H.245/H225.0/???? under this circumstance? So nobody else can provide any pointers/opinions? Troy. On Wed, 2008-08-20 at 09:26 -0300, Marcos Fábio Jardini wrote: > Hi Troy > > Try see "http://www.packetizer.com/ipmc/h323/whatsnew_v4.html - > Multiplexed Stream Transmission" for some hint > > In your case each endpoint must act as a MCU, what is need is to > investigate the recomendations and see if more than one of end-point > can signal herselfs as MCU capanility > > See the OpenMCU implementation as the begining point of how implement > the mcu capable signaling. > > Another good point is our CVS > (http://sourceforge.net/cvs/?group_id=194599) there you can see other > reference implementations, like NAT/Firewall Traversal etc. > > PS.: is not necessary to create a 'trash' account for this group, is > not a group with many messages and we have no problems with spam > > 2008/8/18 Junk-Mail Wastebasket <blindDrop(a)shaw.ca> > Greetings H323Plus devs. > > I have need of an ability to support a conference where each > end-point can/will manipulate the audio stream coming from > every other end-point based on some data associated with each > end-point. To me, it seems like each end-point should > multicast the audio stream and possibly the data that each > other end-point will use to modify the audio stream. Each > end-point should listen for multicasts associated with the > conference and modify and mix the streams as required based on > the data. From my internet searches, this seems to be more or > less the classic decentralised/distributed multipoint > conference. > > I have attempted to search the mailing list archives and code > for how to do this with H323 Plus and have found that the > capability appears to be lacking. Although I am willing to > work on developing this capability, I am far from expert on > H323 (Plus or otherwise) or VoIP and would need some strong > pointers from those of you who are expert. I would appreciate > some input on how best to proceed to get the functionality for > which I'm looking. > > Your suggestions would be most welcome, > > Troy. > > > > -- > ----- > Jogue RPG, alimente o lado criativo! >

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How to enable P_DIRECTSHOW in ptlib
by JobsGuo 27 Aug '08

27 Aug '08

hi: Anyone know how to enable P_DIRECTSHOW? Although I have install Directshow SDK and set the directory in vs2003, when I complie the ptlib,the P_DIRECTSHOW is still undef in ptbuildopts.h.then it cannot support DirectShow. who can help me to make the P_DIRECTSHOW is defined? thanks! 2008-08-27 JobsGuo

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silly question but...
by Amnon David 24 Aug '08

24 Aug '08

Has anyone ever managed to register with the GNU Gatekeeper using the "simple" sample application ? Whichever method I try, I get a SecurityDenial from the Gatekeeper Will appreciate any help on this -Amnon

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Multicast
by Junk-Mail Wastebasket 20 Aug '08

20 Aug '08

Greetings H323Plus devs. I have need of an ability to support a conference where each end-point can/will manipulate the audio stream coming from every other end-point based on some data associated with each end-point. To me, it seems like each end-point should multicast the audio stream and possibly the data that each other end-point will use to modify the audio stream. Each end-point should listen for multicasts associated with the conference and modify and mix the streams as required based on the data. From my internet searches, this seems to be more or less the classic decentralised/distributed multipoint conference. I have attempted to search the mailing list archives and code for how to do this with H323 Plus and have found that the capability appears to be lacking. Although I am willing to work on developing this capability, I am far from expert on H323 (Plus or otherwise) or VoIP and would need some strong pointers from those of you who are expert. I would appreciate some input on how best to proceed to get the functionality for which I'm looking. Your suggestions would be most welcome, Troy.

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Bitrate Fluctuations
by Adrien Rudulier 19 Aug '08

19 Aug '08

When I am connected to OpenMCU using PVX, I notice that the bitrate coming from OpenMCU varies quite a bit. I have the bitrate set to 1920 Mbps but actual call rate is 1856 and the actual bitrate bounces sporadically never hitting the maximum bitrate consistently. Sometimes it goes above the call rate and then back down. Is this something that H323+ handles or is this handled by the codec? __________________________________________________________________ Yahoo! Canada Toolbar: Search from anywhere on the web, and bookmark your favourite sites. Download it now at http://ca.toolbar.yahoo.com.

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Shutting down a call manually in OpenMCU
by Adrien Rudulier 06 Aug '08

06 Aug '08

I am trying to manually remove members from a conference from the status web page but I am having troubles closing down the connection properly. I have access to the conference manager and the conference connection. When I call H323Connection::ClearCall(), it severs the connection to the endpoint and the member is removed after ConferenceManager::RemoveMember is called but there is a segmentation fault because the logical channel threads are still running. I keep getting the following assertion failure: 2008/08/06 15:26:39.089 HTTP Service:0xb50f9b90 Message Assertion fail: Transport thread did not terminate, file transports.cxx, line 1355, Error=107 I was wondering if anyone knows how to close down a call properly. __________________________________________________________________ Yahoo! Canada Toolbar: Search from anywhere on the web, and bookmark your favourite sites. Download it now at http://ca.toolbar.yahoo.com.

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