Tell me if you’ve heard this one before: A video conferencing company seeks to make multiparty chat and collaboration affordable, opening up the market to a whole new crop of customers for whom the old room-based systems were just too expensive.* That’s what Tely Labs seeks to do, by adding new features to its conferencing suite and pitching its wide-angle video cameras up-market, to a new set of customers who might pay a little more than the average consumer. And it’s raised some funding — $15 million from Comcast Ventures and Rogers Ventures Partners — to take its low-cost conferencing equipment to market.