sip sever4 factories verified

Established in 1999, Guangzhou Video-Star Intelligent Corp, Ltd (Stock code: 870976) has been devoting itself in Smart Security, Smart Building, Smart Home and Smart Medical Care industries. Based on the big data, cloud service and AI technology, GVS aims to provide its valuable customer with "one-stop IoT technology platform" and building automation, home automation, smart intercom products and services. With "Connect the world and create value" as its obligation, GVS now is focusing on "innovate to improve our life" and going to cast itself into a most valuable smart IoT service provider.

DBL Technology Ltd, is a leading manufacturer in developing and manufacturing advanced VoIP products for the worldwide market.DBL has been dedicated in the development of the latest VoIP technology for the last 15 years and has developed a wide range of VoIP Gateway and IP Phone.DBL is committed in offering high quality, innovative, and affordable products.

Founded in 2011, Shenzhen DINSTAR Co., Ltd. is a leading global provider of IP Unified Communication and VoIP products. We have been delivering more agile, efficient and affordable communication solutions to our customers through our reliable, innovative and future-proof products. Now we have more than 180 specialists, most of them coming from top-rank global telecommunication providers, who have dedicated themselves to VoIP, unified communication and wireless mobile network technology for more than 15 years.

Shenzhen OBTPA Technology Co., Ltd. is a national high-tech industrial company, founded in 1999. Which integrating R& D, production and sales of public broadcasting, conference systems, professional audio and other products. It is headquartered in South China's economy and technology. The frontier - Shenzhen. Since its establishment in 1999, the company has been adhering to the business philosophy of continuous innovation and creating value for customers. The series of products have been successfully applied in many world event venues such as the Olympic Games, World Expo, Asian Games, Universiade, etc., with a number of appearance patents, software copyrights, and use. New patents and invention patents have created and established a good image brand in the industry--OBT.