[PLUG] Teleconferencing options in Linux?

[Alex Daniloff]

Hello Linux folkz,
Could somebody point me in the right direction please.
I'm looking for a possibility to simultaneously communicate over
Internet with my business partners using microphones, speakers and
optionally web cams.
Part of our partners are still running Winblows, the other part runs
Linux.
What is the best method, software to communicate seamlessly between
us?
Thank you very much in advance for any sources of information or
hints.
Alex