/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: kwonchongwook https://cdn.slidesharecdn.com/profile-photo-kwonchongwook-48x48.jpg?cb=1738564832 Telco OSS : Charging Gateway in 3G / 4G(LTE) Mobile App Analysis BI (Business Intelligence) Big Data Openstack