Re: Refs or no refs

Ross Binnie (dianaros@vianet.on.ca)
Tue, 28 Oct 1997 08:05:07 -0500


The reflector at Trondheim seems to override the no audio. When there is no
video activity, the reflector seems to send class lectures (audio).

Ross

----------
> From: Jason Williams <streak@ccwf.cc.utexas.edu>
> To: CU-SEEME-L@cornell.edu
> Subject: Re: Refs or no refs
> Date: Monday, October 27, 1997 6:18 PM
>
> On Mon, 27 Oct 1997, Ross Binnie wrote:
> > Audio disabled
>
> I've been playing around with audio...make sure you have audio disabled
> BEFORE going to the reflector. It seems the Cornell PC client doesn't
> keep track of the status of receive and send audio capabilites. I ran a
> few tests with my reflector and another to see if the reflector knew I
was
> no long capable of receive audio. It didn't and consequently, anyone
> sending audio wasn't heard, but the max receive cap still shot up each
> time someone sent audio.
> Too bad the Cornell PC version isn't still being updated :)
>
> > At 5.06 pm EST connected to Streaks Ref 127.0.0.1
> > Looking at my own image; Send 10 > 28
> > Rec. 10 > 120
>
> Try setting your max send to 15...and your max receive to 28.
> Those settings work fine when connected to yourself, but when connected
to
> a reflector, your modem might be flooded.
> High max send rates often are the causes of timeouts from reflectors as
> well.
>
> > Cu showed link loss as 0%
> > link response as 0.87
>
> Weird..with those rates from before, your link response should have been
> at least 3-4 seconds.
>
> > Test ended after 5.5 minutes. None of the above images were completly
> > displayed in that time.
>
> Try fixing your rates..Contrary to what some people think, I don't
believe
> setting your max receive sky high will help you any. It may harm you due
> to the reflector trying to send more to you than it can handle. But then
> I dunno, the reflector supposedly adjusts the client's cap so that may
not
> not happen.
>
> > This is about normal for me. By contrast using Connectix VideoPhone
each
> > image received is complete albeit resolution is fair to poor for most
> > connections.
>
> Assuming perfect conditions and your rates from above:
> You were sending a max of 28kbps
> If all 3 of the people you were watching were sending around 15kbps each,
> that's 15kbps X 3 = 45kbps..
> Total bandwidth = total sending + total receiving = 28kbps + 45kbps =
> 73kbps
> which means, you're 28.8kbps modem would have needed 73kbps to receive
> everyone and send at 28kbps. Try adjusting your rates downward and see
> what happens. 4 total windows (local + 3 other vids) is pushing it for
> CU. iVisit on the other hand seems to handle more people very well. But
> iVisit also handles video quality differently.
>
> --
> streak@ccwf.cc.utexas.edu * Jason Williams -- Austin, Tx. | |
> streak@mail.utexas.edu * University of Texas at Austin | ___ |
> streak@cs.utexas.edu * BS Computer Science \_|_/
> *************** http://ccwf.cc.utexas.edu/~streak/ **************|
>