Knowledgebase ProCall Enterprise Current: DATEV telephony basis integration in ProCall and MetaDirectory DATEV telephony basis integration in ProCall and MetaDirectory State of knowledge as of September 5, 2013 This article explains how to perform DATEV integration with ProCall Enterprise and MetaDirectory.DATEV provides a manual written by estos for this integration on its homepage.http://www.datev.de/dnlexos/mobile/document.aspx?consumer=webApp&document=0904069Please follow these instructions exactly.