The Design and Implementation of an Enhanced SIP ALG to Support MSRP Sessions

Author

Yang, Haibo ; Lin, Hu ; Li, Jin ; Lei, Weimin

Author_Institution

Coll. of Comput. & Commun. Eng., Grad. Univ., Beijing, China

Volume

2

fYear

2009

fDate

12-14 Aug. 2009

Firstpage

289

Lastpage

292

Abstract

The Message Session Relay Protocol (MSRP) is defined by IETF as a session-oriented for instant message, file transfer,remote desktop sharing, whiteboard for telephone conferences and so on. Itpsilas also adopted by IP multimedia subsystem in 3G networks and becoming as important as RTP. So how to make MSRP work well through NATs have been addressed from various aspects. In this paper we propose the design and implementation of a enchanced SIP ALG that can help MSRP to traverse through NATs based on Connection Tracking and Expectations of NATs. Finally we give the test result of the system on an embedded platform developed as a product router.

Keywords

3G mobile communication; IP networks; internetworking; multimedia communication; transport protocols; 3G network; IP multimedia subsystem; NAT traversal; application layer gateway; connection tracking; file transfer; message session relay protocol; network address translator; remote desktop sharing; session initiation protocol; session oriented instant message; telephone conference; transport protocol; whiteboard; Content addressable storage; Design engineering; Educational institutions; Hybrid intelligent systems; Ice; Network address translation; Relays; System testing; Telephony; Transport protocols; ALG; MSRP; NAT Traversal; SIP;

fLanguage

English

Publisher

ieee

Conference_Titel

Hybrid Intelligent Systems, 2009. HIS '09. Ninth International Conference on

Conference_Location

Shenyang

Print_ISBN

978-0-7695-3745-0

Type

conf

DOI

10.1109/HIS.2009.170

Filename

5254468