I'm on a pretty fast DSL line, and speedtest looks good. My chat partner
lives in China, and her connection is much worse: About 500KB/s
downstream and around 100KB/s upstream.
When starting the Chat, we first even had a video and a voice
connection, although, of course, with bad quality, but it went worse. In
the end, we only had voice, and this in only one direction: I could hear
her, but she couldn't hear me anymore.
Opening the diagnostic window of the Jitsi chat client, I could see many
package losses upstream (more than 80%), and the upstream speed from my
computer towards the other party was shown as around 5 KB/s only. No
surprise that even voice didn't go throught. The downstream bandwidth
from her computer to mine was also not that good, always around 60-70
Now, what I don't understand is why the data rate is so low. There was
certainly no problem with my Internet connection, as I could verify.
Even though my chat partner has rather slow Internet, the speeds we were
experiencing, were ways below what we could, in theory, have.
BTW, we both terminated other applications on our systems, to reduce the
probability that some other program is taking bandwidth.
Immediately afterwards, I had a video chat with a Japanese friend, and
it worked without problems.
Any suggestions what we can do here? Is there anything in the Jitsi
settings where I could fine-tune the connection to better use the low