 MILPITAS, CA ACCESSWIRE June 22, 2021 Altigen Communications Inc. OTCQB:ATGN, a Silicon Valley-based Microsoft ISV and Cloud Solutions provider, today announced the availability of CoreInteract, the first AI-based Enterprise Customer Engagement platform for Microsoft Teams. CoreInteract for Microsoft Teams is an innovative enterprise customer engagement platform designed for any business whose sales, service, and support are a top priority. 