網路電話（Voice over Internet Protocol,VoIP）不但具有低廉的通訊費用優勢，並擁有與多媒體相結合之特性，它已成為漸受歡迎的傳播媒介。然而，目前多數國民小學所使用的傳統電話總機屬於封閉系統，皆有著擴充不易及維修昂貴的缺點。 為了解決上述的問題，我們在現有的網路服務基礎下，以自由軟體所開發的IP PBX軟體“Elastix”導入校園語音通訊系統(Campus Voice Communication System, CVCS)。我們以精簡管理人力及成本為目標，並就系統維護性、擴充性及管理便利性加以分析實作，設計出可實際運行於校園的IP PBX系統，降低學校的對外通訊費用。本系統可作為學校建置IP PBX之範例，更可將網路電話相關的加值應用服務推展至各教育行政機關及各學校間，促進網路應用服務的效益。 The VoIP (Voice over Internet Protocol) not only reduces the communication costs but also combines the multimedia. It is becoming more and more popular. Currently, most of elementary schools are using closed system of tranditional telephone. However, the tranditional system is not easy to extend. It has also incurred an expensive maintaince cost. To solve the above problems, we integrate the existing network structure with the “Elastix” (based on the open source software IP PBX) to develop a campus voice communications system (CVCS) to streamline the management of manpower and costs. The CVCS can work scalability and manage actually to run on the campus of the IP PBX system. It can reduce the external communication costs of the school. In addition, the CVCS is able to be used as an example to build IP PBX of elementary school. The Internet phone assoiciated value-added application services can be extended to various education institutions to promote the benefits of network application services.
