北京电信固定电话网软交换及智能化改造方案的中期报告.docx

北京电信固定电话网软交换及智能化改造方案的中期报告 Introduction 北京电信固定电话网软交换及智能化改造方案的中期报告主要涵盖了电信公司对其固定电话网络进行软交换和智能化改造的进展情况。电信公司受到互联网技术的影响，其传统的固定电话网络已经不能满足用户的需求，因此需要进行升级改造，以提供更加高效、灵活的语音通信服务。 The objectives of the report are to: ? Describe the current state of the fixed-line telephone network in Beijing. ? Explain the rationale for upgrading the network to a soft switch and intelligent network. ? Detail the progress of the project to date, including challenges encountered and solutions implemented. ? Outline the next steps in the project. Background The traditional fixed-line telephone network in Beijing is based on circuit-switching technology, which requires a dedicated circuit between two endpoints for the duration of the call. This technology is efficient for voice calls, but is inflexible and lacks the capability to support value-added services like call forwarding, call waiting, and voicemail. With the emergence of the internet and the advent of Voice over Internet Protocol (VoIP) technology, it has become possible to transmit voice calls over the internet using packet-switching technology. This has given rise to soft switching, which uses software to manage the connection between endpoints rather than dedicated circuits. Soft switching provides greater flexibility and scalability, which is essential for future growth. Furthermore, intelligent network technology can be used to provide value-added services like call forwarding, call waiting, and voicemail. This technology allows the network to recognize the type of call and route it accordingly. The intelligent network can also provide billing services, which enables the telecom provider to offer customized pricing plans to different customers. Project Progress The soft switch and intelligent network upgrade project for the Beijing fixed-line telephone network was launched in 2018. The project has two main phases: the first phase involved the replacement of the existing circuit-switching switches with soft switches, and the second phase