■ Inbound and Outbound Call Service Solution for Service Providers Traditional PSTN telephone network provides telephone call services based on TDM technology, and its service providing and call control is fulfilled by traditional telephone exchanges. Such technology is capable of ensuring voice quality but requires high service cost and long turn around for development and delivery of new services. Confronted by intensified competition, such technology has lost its luster and will eventually be updated. However, the rapid progress of computer technology and wide application of Internet accelerates the spread of VoIP based voice application. In the developed countries and areas, due to the wide spread of broadband network access and the open, transparent telecommunication policies, VoIP applications are focused on multimedia and many value-added services, e.g. iPBX and IP-Centrex; however, in the developing countries and areas, where broadband network application has not been widely accepted, plus the clout of old telecommunication monopoly and objections from the local government, the network construction and telecommunication environment are different. In view of such situation, Voipack, by incorporating VoIP technology and traditional telecommunication network, puts forward the following VoIP system programs aiming at those developing countries and areas. · "IP card" program · "Dialer" program · "Charging at caller side" program · "Call termination" program · "Phone bar" program   [Program Advantage] The program series developed by Voipack takes full advantage of best routes of traditional telecommunication and incorporates VoIP technology to save the extortionate toll call charges. The program improves voice quality, reduces terminal IAD equipment requirement, and greatly protects the preliminary investment for service providers and enterprisers. 　 [System Program] · IP card program IP card program adopts caller password authentication and prepay mode, especially used by individual users. Voipack provides a total solution to IP card service. Components involved include Voipack Message Server (VMS), Voipack Billing Server (VBS) and Voipack Call Master (VCM). VMS provides the voice prompt, voice guidance and voice query for users who dial in. VBS is a billing system. In addition to creating card numbers and passwords by batch, it also offers authentication for the card numbers and passwords, and provides the billing function that terminates calls made from an account at low balance in real time. VCM provides call transfer and multi-routing function. 　　　 IP card program menu: VBS generates card number and password by batch ---- creates card ---- sells to individual user User's menu: Dial in/out telephone number ---- select language ---- enter card number ---- enter password ---- dial callee's telephone number or query balance of account   · "Dialer" program ialer adopts caller password authentication and postpay mode, especially used by corporation users. Components involved include Voipack Billing Server (VBS), Voipack Call Master (VCM) and Voipack Message Server (VMS). “Dialer” program is identical to IP card program except that users need not input card number or password any more. Users can simply dial the number after picking up the phone. Another advantage of such program consists in its capability to file the users having dialers currently, by which dialers can be reset and users can be moved to the target platform.   · "Charging at caller side" program "Charging at caller side" adopts caller number authentication, used by enterprises or individual users. Components involved include Voipack Billing Server (VBS) and Voipack Message Server (VMS). Such program performs billing though authentication of caller number.   · "Call termination" program "Call termination" refers to voice traffic transferring from Internet to conventional PSTN telecommunication lines. It is often adopted by developing countries for providing local call termination for international incoming call and toll call, thus tremendously eliminates toll call charge.   · "Phone bar" program "Phone bar" service is a public telephone call service adopted in developing countries, which caters to the intra-city floating population, features heavy peak toll call traffic but normal voice quality. Components involved include Voipack Call Master (VCM), Voipack Billing Server (VBS) and VOG gateway (4-port).