Relationships Among NGN, Softswitch and MS  

作　　者：Xu Heyuan(Institute of Communications Standards Research, CATR, MII, Beijing 100045, China) 

出　　处：《ZTE Communications》2007年第1期1-3,共3页中兴通讯技术（英文版）

摘　　要：The Next Generation Network (NGN) has been a term frequently quoted in the hot topics of Telecommunication industry. The Softswitch and the IP Multimedia Subsystem (IMS) are proposed to implement the NGN services. It is imperative to reach a consensus on positioning and planning their future directions. However, it is rather difficult to realize smooth network evolution towards IMS as the Softswitch mainly supports the traditional Public Switched Telephone Network (PSTN) and Integrated Services Digital Network (ISDN) services. In addition, the basic and complementary services of Softswitch are offered locally.The Next Generation Network (NGN) has been a term frequently quoted in the hot topics of Telecommunication industry. The Softswitch and the IP Multimedia Subsystem (IMS) are proposed to implement the NGN services. It is imperative to reach a consensus on positioning and planning their future directions. However, it is rather difficult to realize smooth network evolution towards IMS as the Softswitch mainly supports the traditional Public Switched Telephone Network (PSTN) and Integrated Services Digital Network (ISDN) services. In addition, the basic and complementary services of Softswitch are offered locally.

关 键 词：Relationships Among NGN ISDN PSTN IP IMS Softswitch and MS 

分 类 号：TN915[电子电信—通信与信息系统]