I've done voice with MS Messenger. Haven't tried video yet, but I think it will do it.
Free with all versions of Windows.
Edited to add:
I just checked Messenger (had to shut down for a minute due laptop battery, sorry 'bout that, Chief)). It definitely does video conferencing.
Broadband would be the go. The connection is only as good as the slowest link, so if you connected with someone on broadband you'd fly, but a 56k friend would slow things up.
I remember now, that a mate and I tried it a few years ago with 56k dialup. IIRC, 56k was not good enough for voice and video, so we typed and had jerky video! We proved the technical feasibility, but IMO it was pretty poor.
The voice I did in the top paragraph with Messenger was broadband both ends, but my recipient didn't have the camera, hence the voice only. It worked fine. I can't recall if it was full or half duplex; it was just like an international telephone conversation if that helps. A bit of delay or lag, but very clear.
Cheers
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Last edited by Ausatco; 16th August 2003 at 09:04.