Video conferencing for Linux? -- Yes ???

>Interesting post. We (Excelco, Inc.) was approached about
>two weeks ago to become an authorized reseller for a
>product that will allow for collaboration. It is a real-time meeting
>processing software for Linux. It provides for hosting
>of the multimedia collaboration on a Linux host, but
>requires Windows or Macintosh clients in order to
>participate -- STRANGE !

I don't want to run the conferencing client on Linux, but I would like to
have H.3232 support in my Linux firewall so I can run videoconferencing
clients on attached Windows systems. Do you offer such a module?