Aperto Networks might come across as a new startup, having been in the wireless headlines lately with WiMax product announcements. However, the company is nine years old and has taken a massive $159 million in venture funding since its inception. It makes WiMax base stations and network equipment for purposes ranging from residential-size deployments to full scale commercial. It also makes a base station that supports both fixed and mobile WiMax at the same time. The $20 million funding was led by Quicksilver Ventures. Also joining were previous backers Gunn Allen Venture Partners, JK&B Capital, Canaan Partners, Alliance Ventures, Innovacom, Jafco Ventures, and Labrador Ventures. Aperto is based in Milpitas, Calif.