Oscar was my last lifeline in trying to resolve an extremely difficult iPhone / internet connection problem with a recently purchased home security camera system. After several days of failed communications and fix attempts with the security company’s technical support group, I found Oscar’s network administrative services via the internet. He promptly responded to my request and within an hour arrived at my residence. Through relentless determination, Oscar identified the problem and corrected it. Oscar is the definitive professional… knowledgeable, tenacious and polite. One of the best.