@article{(Open Science Index):https://publications.waset.org/pdf/10162, title = {Overload Control in a SIP Signaling Network}, author = {Masataka Ohta}, country = {}, institution = {}, abstract = {The Internet telephony employs a new type of Internet communication on which a mutual communication is realized by establishing sessions. Session Initiation Protocol (SIP) is used to establish sessions between end-users. For unreliable transmission (UDP), SIP message should be retransmitted when it is lost. The retransmissions increase a load of the SIP signaling network, and sometimes lead to performance degradation when a network is overloaded. The paper proposes an overload control for a SIP signaling network to protect from a performance degradation. Introducing two thresholds in a queue of a SIP proxy server, the SIP proxy server detects a congestion. Once congestion is detected, a SIP signaling network restricts to make new calls. The proposed overload control is evaluated using the network simulator (ns-2). With simulation results, the paper shows the proposed overload control works well. }, journal = {International Journal of Electronics and Communication Engineering}, volume = {1}, number = {12}, year = {2007}, pages = {4089 - 4094}, ee = {https://publications.waset.org/pdf/10162}, url = {https://publications.waset.org/vol/12}, bibsource = {https://publications.waset.org/}, issn = {eISSN: 1307-6892}, publisher = {World Academy of Science, Engineering and Technology}, index = {Open Science Index 12, 2007}, }