matthias,
i looked at partiSIPpation documentation and didn't quite understand why
microphone and speaker volumes are part of the api. i would think that
those are internal matters of the gui component. when gui places a
call, i would imagine it gives to core an ip address and port that it
wants to use for the media plus a list of codecs it supports. i don't
understand what volume issue have to do with communication between gui
and core.
-- juha