All products have passed the telecom carrier-grade BMT test which including environment, function and field test. And each model has been engineered to provide a complete set of features required for a majority of soft switch platform or IP-PBXOur VoIP CPE products get wide range applications in all over the world, especially in the carrier market. Our main customers include KT, SKT, KCT, Rostelecom Russia, SATINTERNET, Telecom Italia, China Mobile, and so onThe headquarter of Flyingvoice is in Beijing, which is primarily as a R&D center. And there is a branch in Shenzhen (China), which is focus on manufacturing, production management and quality assurement