[AG-TECH] Audio Diagnostic Question

John Langkals langkals at pacific.mps.ohio-state.edu
Sun Oct 16 22:41:08 CDT 2005

Hello AG Tech,

What methods do you use to resolve audio issues before and during a live
Access Grid event?  

Really how much can be done?  What are some of the usual and more unusual
issues you faced and how were you able to resolve them (or not)?

* Things I can do before an event is test the audio and hope that the
quality will remain.

* If the audio is not that good, we can reboot local grid services; perform
a trace route and/or multicast trace route seeking out bottleneck routers
(including cache limiting issues) or firewalls.  If firewalls are blocking
audio traffic, what can be done besides requesting those ports being opened,
which would be the best case?

* I can double audio packets in RAT.

This does not even begin to touch local audio and echo cancellation
troubleshooting.  I will be posting those questions in future emails ;)

Thank you,


John Langkals
Systems Manager
M2021 Physics Research Building
191 West Woodruff Avenue
Columbus, Ohio 43210
614.292.6957 Office
614.327.3732 Cell
614.292.7557 FAX


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