Quite often sound will cease in one direction. Usually, in such cases I
can hear the other party but they cannot hear me. Though sometimes it
is the other way around. During such outages, which last a minute or
two, the technical call info dialog shows 0% loss in either direction
and acceptable bandwidth. e.g.:
Bandwith : ↓ 26 Kbps ↑ 27 Kbps
Loss rate : ↓ 0% ↑ 0%
This has been with not only Jitsi 2.7.5415-1 on Ubuntu 14.04.2 LTS, but
also many earlier versions.
What can be causing that and how can it be fixed?