One of the typical applications of CTI
◆ IP telephone gateway
Li Yongmei
Editor Press: CTI spans between telecommunications and computers, its application is very wide. Through computer phone integration applications, various organizations can use CTI to provide more effective personalization services for their customers. Interactive response, intelligent transfer, coordinated voice / data transfer, consultation, intelligent response, intelligent call routing, information center, transfer load balancing, customer voice mail, etc. function can be applied to finance, transportation, Many industries such as transportation, tourism, medical, education, news, government agencies, public services, etc., which have the fullest advantage of their humanized, personalized, low cost and high efficiency. IP telephones are the latest application results of computer technology and telephone technology integration. It is the benefit of us. It is obvious: greatly improve bandwidth utilization, reducing phone expenditure, promoting network construction and development. Today's IP phone eliminates the traditional circuit switched communication mode, which converts phone speech into packets and then transmits through TCP / IP protocol networks (Internet, intranet, ATM, and Frame Relay). The IP telephone gateway is the primary device of IP network communication. It is a bridge that establishes PSTN network and TCP / IP network communication. The voice of the user passes to the gateway through the PSTN network, and the gateway encodes, compresses, groups, QoS guarantee, Send IP voice packets to TCP / IP online transmission, and after reaching the gateway of the other party, the converged tuning group is performed, forming a voice signal, and then transmits the PSTN network to the other party. Take the US Intertel's VocalNet as an example, the Vocal'Net has the above functions and: 1. Support H. 323, g. 723.1 standard. 2. Support analog signals, E1, T1, ISDN trunking, available 8-120 port phone / fax services. 3. Support China No. 1, China Seventh Signature. 4. Supports various compliance H. 323 Other hardware or software implemented network voice. 5. Use high-performance DSP resource boards to perform real-time speech compression and decompression, do not occupy host CPU resources. 6. It can be used with the PBX produced by any manufacturer and the existing computer network. 7. With tracking call charging function modules --- provides a variety of preset reports. 8. Has a variety of interactive response interfaces. 9. Flexible international phone number analysis and call routing settings. 10. Through the International Settlement Center, international long-distance business settlement.
