Title :
A Study on Keepalive Mechanism between SIP UA and Proxy server for Internet Telephony Service
Author :
Lee, LIJin ; Han, Jae Cheon ; Hyun, Wook ; Kang, ShinGak
Author_Institution :
Electron. & Telecommun. Res. Inst.
Abstract :
When Internet telephony service is provided using SIP protocol, The session initiation protocol (SIP) does not define a keepalive mechanism for the sessions it establishes. Although the user agents may be able to determine whether the session has timed out by using session specific mechanisms, proxies will not be able to do so. The result is that call stateful proxies will not always be able to determine whether a session is still active.
Keywords :
Internet telephony; protocols; Internet telephony service; SIP UA; SIP protocol; keepalive mechanism; proxy server; session initiation protocol; Electronic mail; IP networks; Internet telephony; Protocols; Web and internet services; Web server; Keepalive; SIP; Session Timer;
Conference_Titel :
Advanced Communication Technology, The 9th International Conference on
Conference_Location :
Gangwon-Do
Print_ISBN :
978-89-5519-131-8
DOI :
10.1109/ICACT.2007.358553
