The Avaya IP Office 500v2 Control Unit System is a sophisticated VoIP system designed for business and industrial offices. With features such as SIP trunking, auto attendant, call distribution, music on hold, and voicemail capabilities, this system offers reliable and efficient communication solutions. Rack-mounted for easy installation and management, this Avaya IP Office system is a powerful choice for enhancing your office's telecom infrastructure, originating from China.