Roni,
The proposal is limited to the case where multicast is used when
a MC does not exert control over the conference. That is, when two
devices are in a point-to-point call. One example of where this is useful
is when a PBX wants to put a call on hold and “music on hold” is
broadcast by a server to all devices that are on hold. In this case, for
example, a PBX (or phone) might send a TCS=0 to the held party and then send an
OLC proposing a multicast address.
Any use of multicast that involves an MC (or transmission of the
communication mode table) is outside the scope of this proposed addition and is
already addressed by H.323.
Paul
From: Even, Roni
[mailto:roni.even@polycom.co.il]
Sent: Tuesday, January 29, 2008 12:25 PM
To: Paul E. Jones; itu-sg16@lists.packetizer.com
Subject: RE: [itu-sg16] AVD 3299
Paul,
This works in point to point and I am not sure why you need
multicast in this case. Also you are not doing multicast H.245. So there is an
MC
Now let's take the case of an MC that has three participants in the
multicast group.
The first one sends an OLC with payload type 100. The second one
sends an OLC with payload type 101 and the third with payload type of 102. Now
the MC needs to send an OLC to the first participant, which payload type should
it use 101,102,100?
Roni
From: Paul E. Jones
[mailto:paulej@packetizer.com]
Sent: Tuesday, January 29, 2008 6:47 PM
To: Even, Roni; itu-sg16@lists.packetizer.com
Subject: RE: [itu-sg16] AVD 3299
Roni,
I guess I am still missing your point. This is a means of
sending media, just like unicast. The payload type numbers are selected
by the sender, just as they are for unicast. If the recipient accepts the
proposed OLC, then it would listen on the multicast address for incoming media
accordingly.
Paul
From: Even, Roni
[mailto:roni.even@polycom.co.il]
Sent: Tuesday, January 29, 2008 11:24 AM
To: Paul E. Jones; itu-sg16@lists.packetizer.com
Subject: RE: [itu-sg16] AVD 3299
Paul,
Is the multicast uni-directional, is it just a point to point. If
it is to be used to enable the EP to send media to a multicast group this
should be aligned with the media the other side except to receive. How does it
get set
Roni
From: Paul E. Jones
[mailto:paulej@packetizer.com]
Sent: Tuesday, January 29, 2008 6:20 PM
To: Even, Roni; itu-sg16@lists.packetizer.com
Subject: RE: [itu-sg16] AVD 3299
Roni,
I don’t understand your concern. Can you clarify the
problem?
Paul
From:
itu-sg16-bounces@lists.packetizer.com
[mailto:itu-sg16-bounces@lists.packetizer.com] On Behalf Of Even, Roni
Sent: Tuesday, January 29, 2008 11:06 AM
To: itu-sg16@lists.packetizer.com
Subject: [itu-sg16] AVD 3299
Hi,
I
looked at the document and I think I understand the OLC procedure. I need it
does not address how you decide on a dynamic payload type number when needed.
The
OLC gives the dynamic payload type number to send
Roni