asterisk users - Jun 2010 - Persuing the gtalk issue - not only jack-related

Hello everyone!
  So I hacked app_jack.c today, as best I could. Whic came mostly down to 
inserting ast_log() messages.
   I discovered the following with JACK:
   When it starts, it tries to read 512 bytes and only gets 0. That clears up 
after a while.
   Sometimes a good time later than the reading comes the writing. And there 
the real strangeness might begin. Because usually the framebuffer of JACK is 
set in power of two. But I see, that app_jack wants to write 3844 (31*31*2*2), 
yet it fails!
   Now I found out, that I can phone now. BUT: Theother party reaches me quite 
clear, after a few seconds of horrible white noise, with frequencies above 
8kHz. Yet I come through all hacked or very slow.
   The slowness also happens to my voicemail. So if someone gets the voicemail, 
the sound is slow. As if it was timestretched. I don't think it's even
changed
in pitch. I looked at the voicemail sound files again and the quality (8kHz, 
mono, 16bit) looks good.
   Can it be a gtalk problem? Does gtalk not use 8kHz?
   Which codec does gtalk use? May it be, that it's one of the external
codecs
and they are somehow broekn at my end?
   Kindly yours
            Julien

--------
Music was my first love and it will be my last (John Miles)

======== FIND MY WEB-PROJECT AT: =======http://ltsb.sourceforge.net
the Linux TextBased Studio guide
======= AND MY PERSONAL PAGES AT: ======http://www.juliencoder.de

Oh P.S.:
   I changed my jackd startup options as well from:
jackd --tmeout 4500 -R -d alsa -d hw:1 -r 48000 -z shaped
and then in case a:
-p 64 -n 2
Case b:
-p 1024 -n 3
case c;
-p 128 -n 2
   Case c is my default setting.
   The rountrip time to talk.google.com is 60.440ms average. My upstream should 
be between 15-37KB (upto 256 kbit).
   Might my line be too slow?
   Kindly yours
            Julien

--------
Music was my first love and it will be my last (John Miles)

======== FIND MY WEB-PROJECT AT: =======http://ltsb.sourceforge.net
the Linux TextBased Studio guide
======= AND MY PERSONAL PAGES AT: ======http://www.juliencoder.de