Bartholdi Partners, LLC

Xerox Corporation                   US West

Storage Technology                Zenith Data

AT&T                                        Nokia

Xircom                                     Dll Group

British Telecom                        AMS

Companies                  Investors

Wasabi Systems         Intel Capital

Datria Systems           Koch Ventures

Infinitec                      Chisholm Ventures

Artinsoft                      Intel Capital, Microsoft

ParkerVision               Tyco Ventures

GoAhead Software     Intel Capital, Columbia

Petalynx                     Tallwood Ventures

Lightel Systems          eCentury Capital

Call Sciences              Chatterjee Group

Arroyo Networks         Comventures

Astute Networks          US Venture Partners

Windpoint Partners              Xerox Ventures

Austin Ventures                    Highland Partners

            Venture Capital Fund of America