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Application Research and Design of H.323 in Softswitch

Author: TangZhe
Tutor: HuangBenXiong
School: Huazhong University of Science and Technology
Course: Communication and Information System
Keywords: VoIP Softswitch H.323 SIP Next Generation Network Address Resolution High Availability
CLC: TN915.04
Type: Master's thesis
Year: 2004
Downloads: 263
Quote: 4
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Abstract


As VoIP technology continues to evolve and mature, the telecommunications network from the circuit -switched networks to IP networks trend has become increasingly evident. As a packet-switched network for voice services is one of the earliest attempts , H.323-based IP telephony network has been more popular , operators also invested huge amounts of money on the device . From the traditional circuit- switched networks to next-generation network evolution process, the need to fully protect existing huge investment , so the next generation softswitch core network equipment must be traditional circuit-switched networks and H.323-based IP telephony network compatible . Meanwhile, the rapid development of Internet , SIP growing number of users . SIP and H.323 network is a network system interoperability issues must be considered . PSTN, H.323IP telephone network , SIP networks networks coexist with the current situation, a variety of network convergence is the trend. In this paper, the development status of VoIP technology began to analyze the direction of development of VoIP , softswitch and the introduction of next-generation network architecture , discussed and next-generation softswitch network functions , the main protocol , network use, and evolve strategies to introduce softswitch architecture in UMTS mobile communication network in the next generation of applications . This article discusses the H.323 protocol and architecture and its application softswitch necessity and feasibility . After the SIP and H.323 networks of different network address translation systems and interoperability issues , research and analysis addressing the interworking between them positioning scheme . Then combined with specific research projects, namely small and medium- capacity carrier-grade softswitch systems, analysis of the H.323 protocol softswitch application gives H.323 call server module design ideas, including the division of the functional modules , interface design , the state machine implementation , data structure design, multi-protocol interworking processes. H.323 call server module through softswitch users , PSTN / ISDN, H.248 user , SIP and H.323 IP users to achieve the telephone network interconnection. As a next research priorities, this final analysis Softswitch Call Server high-availability solutions for the design and address resolution server design .

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