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The Research of the Interworking between SIP and MGCP Protocol Based on the Softswitch

Author: LvJinHua
Tutor: ZhouZuRong
School: Qingdao University of Science and Technology
Course: Control Theory and Control Engineering
Keywords: Softswitch SIP SDP MGCP Interworking RADIUS
CLC: TN915.04
Type: Master's thesis
Year: 2008
Downloads: 74
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Abstract


Present, along with scientific and technological progress and the increasing requirement for data services , with the rapid development of multimedia services give to transmit voice business mainly traditional telecommunications network brings tremendous pressure. Open set of voice , images , data , multimedia integrated services as one of the next-generation network architecture gradually into view , become hot spots in the telecommunications network . The softswitch is the core technology of the next generation network , because it can become the next - generation packet network call control and business core is also key circuit-switched network to a packet network evolution . Interworking between ISUP, wireless access , SIP, H.323 , MGCP signaling system , which is the basis of the softswitch core equipment . This paper describes the SIP and MGCP protocol stack and call process , to identify similarities and differences between the call control and media control . Key issues in -depth analysis of interoperability protocol translation, addressing , capability negotiation based on the proposed extension in the Call Agent entities the interworking function modules , as well as the issue of user authentication , billing and other business concern RADIUS protocol of processing design program . Call Agent modular design , the underlying SIP and MGCP protocol stack , the protocol syntax constitute a guarantee agreement command , the correctness of the message ; interworking module build on top of the protocol stack , responsible for semantic parsing of the protocol , including building entities at the state , based on the entity in which the state issued the corresponding instruction . RADIUS systematic design through the use of encryption algorithms , authentication and authorization subsystem security authentication ; the billing subsystem call records collected by the collection point to the billing center to generate billable if a single billing functions . Call Agent protocol stack , authentication, accounting function to achieve a systematic design simplifies development complexity , facilitate the expansion of the entire system is modular in design and interoperability modules establish .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Communication network > General issues > Communication protocols, communication protocols
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