Vertical Communications, Inc. is a corporation that specialized in premises-based private branch exchanges, i.e., business telephone systems. Vertical Communications changed its name on January 1, 2005 from Artisoft, Inc. after acquiring Vertical Networks in September 2004. In September 2005, Vertical Communications acquired Comdial. On December 1, 2006, Vodavi Technology was acquired by Vertical Communications.
As of 2018/2019, limited products could be purchased of refurbished units from equipment brokers.