Research and Implementation of NAT Traversal for SIP in Softswitch

Hu, Guang; Liu, Yan; Xin, Yu

doi:10.1109/fgcn.2008.185

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“…SIP is used to create and control multimedia session, it has many advantages, for example simple, flexible, strong expansibility, etc, it becomes dominant signaling protocol in the NGN network, also for the future of multimedia application [3], it can provide a public platform for the general business. Along with the increase of future communication data, equipment processing complexity increases, the difficulty of the unified management will be increase, this require to expand the function of processing data to the terminal.…”

Section: Sip Protocolmentioning

confidence: 99%

Research of Soft Switch Technology Based on H.248 and SIP Protocol

Tian

Kong

2014

AMR

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Section: Sip Protocolmentioning

confidence: 99%

Research of Soft Switch Technology Based on H.248 and SIP Protocol

Tian

Kong

2014

AMR

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Implementation and Performance for Lawful Intercept of VoIP Calls based on SIP Session Border Controller

Yang

Liu

2010

2010 10th IEEE International Conference on Computer and Information Technology

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The problems and their solutions when using SIP in NAT environment

Bae

Cho

2010

5th International Conference on Computer Sciences and Convergence Information Technology

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As the number of Internet users increases rapidly, IPv4 address shortage has been developing.The shortage can be completely solved by using IPv6, but it takes too much time to replace all the equipments in the world.Therefore, NAT is used as a temporally solution. NAT reduces the use of address by connecting a local address to a public address only when it is necessary, which can be a good solution for server-client models, but causes NAT-Traversal problem in peer-to-peer communication such as VoIP using SIP in NAT environment. STUN and TURN are used to solve NAT-Traversal problem.This document explains how STUN and TURN are applied to SIP to solve problems when using NAT and points out problems that STUN and TURN cause, and suggests a way to improve.

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Research and Implementation of NAT Traversal for SIP in Softswitch

Cited by 3 publications

References 4 publications

Research of Soft Switch Technology Based on H.248 and SIP Protocol

Research of Soft Switch Technology Based on H.248 and SIP Protocol

Implementation and Performance for Lawful Intercept of VoIP Calls based on SIP Session Border Controller

The problems and their solutions when using SIP in NAT environment

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