Hi Jason, Thank you for your inputs. I will go thru the material and hope the problem will be solved.
Regards, Satya On Thu, Feb 3, 2011, Jason Bell <j.b...@cqu.edu.au> said: > G'day Satya > > Generally speaking, the Access Grid uses the network protocol "Multicast" by > default to enable communication between "joined" parties. > > You might find the following document http://www.accessgrid.org/firewall-doc > useful. > > I am not 100% sure whether the AG supports " Source Specific Multicast ", but > I simply know that the AG by default uses the multicast protocol (whether > this is Source Specific or not - I am not sure, haven't heard the use of that > terminology much before). > > In regards to your problems, I suspect that the issue is more related to > audio device and configuration. You could conduct some self-testing on each > of your Access Grids to assist with trouble shooting. I suggest you have a > look at http://www.accessgrid.org/qa-improve, as it provides some practical > examples on testing Access Grid systems. > > Additionally, you may wish to attend the ASIA-Pacific weekly test session to > receive feedback about your Access Grid from other AG users. Details for the > session are as follows: > > When: Every Monday > > Time: > Bangkok 8.00am > Beijing 9:00am > Manila 9.00am > Singapore 9.00am > Taipei 9.00am > Perth 9.00am > Seoul 10.00am > Tokyo 10.00am > Brisbane 11.00am > Adelaide 11.30am > Canberra 12.00pm > Hobart 12.00pm > Melbourne 12.00pm > Sydney 12.00pm > Auckland 2.00pm > > Venue: APAG Lobby -> AG-EVO@AU Bridge Lobby -> EVO-AG Testing Room > > (https://130.102.78.178:8000/Venues/ac10cd0111eb76b4d3d7bb213a5aa975b) > > Version: AG3 > > Additionally, some presentation material, including AG testing and network > information can be found > http://www.arcs.org.au/index.php/component/content/article/77-video-collaboration/390-video-collab-pres. > > Anyway - I hope helps you with solving your problems. > > Cheers, > Jason. > > > -----Original Message----- > From: ag-tech-boun...@lists.mcs.anl.gov > [mailto:ag-tech-boun...@lists.mcs.anl.gov] On Behalf Of N. Satyanarayana > Sent: Tuesday, 1 February 2011 03:00 PM > To: ag-t...@mcs.anl.gov > Subject: [AG-TECH] Bidirectional video/audio conference problem > > Hi, > > We are facing problem in realizing two way interaction with Access grid. > We have a dedicated network across three different cities with multicast > enabled in our routers. I believe each venue can be configured with only one > multicast group ip address with separate ports for video and audio > transmission. > > The network provider is saying that a node cannot be source as well as > receiver at the same time but in AG it is observed that all the hosts > participating in a particular venue session are transmitting both audio and > video. He is saying it is not the right way of experimenting bidirectional > communication thru audio/video. > > He is asking whether AG supports Source Specific Multicast or not, because he > is saying bidirectional communication thru audio/video can be realized only > thru SSM support. But i did not find any means on how to configure SSM in > access grid. I am using AG 3.1 all in one windows installer. > > Some times we are facing audio echo and some times noise problem. I am not > able to understand whether it is because of audio devices or network > configuration. > > Can you throw some light on where the problem could be as we are not able to > conclude whether it is due to network or audio devices. > > Regards, > Satya > -- > N. Satyanarayana > Centre for Development of Advanced Computing (C-DAC) No. 1, Shivbagh Ameerpet > Hyderabad - 500 016 > > (Off) +91-40-23737124/25 > > http://www.cdachyd.in/econtentquality > > > > -- > This message has been scanned for viruses and dangerous content by > MailScanner, and is believed to be clean. > > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > > -- N. Satyanarayana Centre for Development of Advanced Computing (C-DAC) No. 1, Shivbagh Ameerpet Hyderabad - 500 016 (Off) +91-40-23737124/25 http://www.cdachyd.in/econtentquality http://180.149.48.114/ccr -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.
