[AG-TECH] Audio Diagnostic Question

Jennifer Teig von Hoffman jtvh at bu.edu
Mon Oct 17 08:44:17 CDT 2005

Hi John,

My hunch is you've probably already seen the AGDP tutorial on troubleshooting audio, but I'll include a link here just in case:


It discusses a number of common problems.

There's also a similar tutorial for troubleshooting networks that discusses some of the tools you mention:



John Langkals wrote:
> 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
> 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
> www.octs.osu.edu

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