Pleasanton, Calif. -- Firespotter Labs, a Pleasanton-based startup focused on making complex telephony products easier to use, said on Thursday it has secured $15 million in its second round of funding, led by Andreessen Horowitz. Previous backers Google Ventures also participated. Blake Krikorian, the co-founder and former CEO of Sling Media, joins Wesley Chan, a partner at Google Ventures, and Craig Walker, the chairman, CEO and co-founder of Firespotter Labs, on the company's board. Firespotter's first foray into the communications space was UberConference, which adds a visual interface to a traditional audio conference call. The company also has developed food industry apps Nosh and NoshList, and the social rating app Jotly. The company said it will use the financing to expand its engineering team and develop its telephony-based product line.