I'm putting together a small office where one of the partners will be living outside the UK and another partner will frequently be on the road. We are using mostly SIP-based telephony and I'd like to introduce a videoconferencing solution that's suitable for everyone w/ standard or semi-standard hardware. Does anyone have any good experience for 3 way (or 3+ way) videoconferencing without shelling out tens of thousands of $ for a Tandberg unit?

Skype-to-skype would be sufficient for us partially, but I was hoping there's a better SIP based solution out there that could handle 3-way or n-way calls. Unfortunately, Google results are pretty poor for this space and it's hard to disambiguate! Anyone have suggestions?

Thanks!