SiliconBeat

Gerald Burnett, chairman of the board of directors at Avistar Communications, personally guaranteed the repayment of funds borrowed and interest accrued under a $10 million line of credit the San Mateo maker of desktop videoconferencing and online collaboration tools has with JP Morgan Chase Bank, according to a regulatory filing Friday.

Avistar, which received a warning last month from Nasdaq that its stock was in danger of being delisted months after it regained compliance from a separate warning issued earlier this year, has been in a patent fight with software giant Microsoft and holding its own. The board voted its chief executive, Simon Moss, a bonus despite the fact that the company failed to achieve pre-established performance goals.