Hello AGTech,


I experienced numerous audio and video freeze ups during a conference today.  I 
was connected over multicast into Optiverse over the NCSA this morning and 
successfully tested before the event began. The audio and video froze up at the 
same time and the bit rate went to zero.  In a few minutes the audio and video 
returned.  I did not need to reconnect into the venue. The site that was 
hosting the seminar reported no freeze up on their end.  From your experience 
would this suggest multicast failure between NCSA and our site or just at our 
site?  Would it have helped to bridge Unicast in this case?



Ultimately this is difficult to debug without giving you more concrete data but 
from your experiences, what could have been going on?   I would have expected 
to have been disconnected from the venue and require reconnecting to the room.



I do have one other piece of information to add.  Most every time I connect in 
a venue with this site, I do not see them come up in VIC but I do see them in 
RAT.  Although I don't see this site in VIC, I get all their video streams.  
Interesting.



Thank you,



John





John Langkals

Systems Manager

OCTS

M2021 Physics Research Building

191 West Woodruff Avenue

Columbus, Ohio 43210

614.292.6957 Office

614.327.3732 Cell

614.292.7557 FAX

www.octs.osu.edu<file:///C:\Documents%20and%20Settings\john\Application%20Data\Microsoft\Signatures\www.octs.osu.edu>



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