April Fool’s day passed with some attempted jokes from the tech industry (oh you, Google), while Nokia and Siemens decided that was a good day to officially open its new network joint venture, ‘Nokia Siemens Networks’, for business. Only the launch wasn’t so fun-filled for the telecom company, which cut its market outlook slightly for the year for mobile and fixed telecom infrastructure. Nokia and Siemens announced the new company last June, and they are still shooting for an estimated cost synergies of 1.5 billion euros annually by 2010.