Yeastar is a professional manufacturer of IP PBX and VoIP gateway systems since 2006. They have over 250 staff including 100 R&D team members located in their headquarters in Xiamen, China and Dallas, USA office. Their product line includes the S-Series IP PBX, K2 IP PBX, and analog VoIP gateways that provide scalable and customizable solutions for businesses ranging from 20 to 2000 users. Their systems include excellent CPU hardware, intuitive management software, apps, and 24/7 technical support.