 MILPITAS, CA ACCESSWIRE April 15, 2021 Altigen Communications, Inc. OTCQB:ATGN, a Silicon Valley based Microsoft ISV and Cloud Solutions provider, will announce its second quarter fiscal year 2021 financial results after the close of regular market trading on Thursday, April 22, 2021. The Company will also hold a conference call to discuss the results at 2:00 p.m. 