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Telephone exchange has experienced , and compared to traditional TDM switch from traditional TDM switches to the development process of the softswitch Softswitch supports user larger, more integrated ; using more advanced architecture , the device can be upgraded independently ; Softswitch device scalability , and can support a variety of network protocols , to achieve the transition to 3G , while traditional TDM switches is limited by the hardware architecture can not be done ; the softswitch equipment introduced , such as dual-homed reliable technology , can greatly enhance network security and ease of use . The softswitch equipment occupies an important position in the Next Generation Network (NGN) softswitch equipment at the control layer , the hierarchical structure of the next generation network , various business edge access layer media gateway the call control, and is responsible for the control of communication between the media gateway . Softswitch supports such as ISUP , TUP , SIP, H.323, China No.1 signaling such as call processing protocol , to support the transmission control protocol , such as TCP, UDP, SCTP , media control protocols such as H.248, MGCP , etc. business application protocols such as INAP, TCAP, MAP maintenance management protocol such as SNMP, FTP , etc. . Softswitch supports a variety of IP protocol , the ability of business expansion , is an important part of the 3G business . Proceed from Yunnan entire core network , to analyze gateway office network status and construction of the entire network in Yunnan . Next to their actual participation in organizations Chuxiong , Wenshan and Lijiang gateway office new construction , for example , focuses on the network planning and design process of Wenshan gateway office building ; Finally, the actual implementation of the project , and discusses key service configuration and service verification case, the details start to analyze a the softswitch business-critical implementation process .
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