Hello to all

My company and I am in need of a Voice communication Java web applet that
would allow our clients to have a real-time voice conversation over the internet
with one of our support team specialists. We have looked all over the interenet
and have not found what we are looking for. Does anyone in this newsgroup
know of a product which can do this specific function and not require the
user to install any third party software on their system? If not, does anyone
know which Java package may provide an API for voice communication? Any
help will be greatly appreciated.