Shenzhen Donjin Communication Tech Co., Ltd is a leading provider focused on building blocks for convergence communications. Donjin helps its customers increase revenues and returns on investments by rapidly deploying new enterprise and carrier grade communications products and services. Donjin offerings are built on unique, open technologies, strategic relationships with application and technology suppliers, and leverage best-in-class supply chain and integration partnerships. Because of this, Donjin customers are able to enhance their competitive position and bring their applications and services to market faster and at lower costs. Headquartered in Shenzhen, P. R. China, and with offices around the country, Donjin has a record of technology innovations that have advanced the growth of the communications industry. These achievements include voice portal, TTS, call logging, CompactPCI form factor, high-density voice processing boards and SS7. More than one million ports have been used in China and many other countries. Voice and data system for enhanced communications services. Building on this 12-years tradition, the company is dedicated to providing systems and system building blocks for communications infrastructure, applications, and services, particularly to the rapidly growing wireless, multimodal voice and data applications, and packet infrastructure markets. Donjin is an ISO9001: 2000 certificate company.