Title :
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
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;
Conference_Titel :
Hybrid Intelligent Systems, 2009. HIS '09. Ninth International Conference on
Conference_Location :
Shenyang
Print_ISBN :
978-0-7695-3745-0
DOI :
10.1109/HIS.2009.170
