Conforming normalised behaviour of SIP server overload control mechanism

Overload in SIP servers is major hurdle for communications, especially during multimedia sessions or VoIP Calls. Earlier used mechanisms are based on multiplicative decrease with a fixed mathematical factor. This paper laid emphasis on normalization of this mathematical factor and conforming the applicability of probabilistic change during a SIP Server overload condition. This probabilistic change is based on earlier used AIMD algorithm. We show that mechanism is quite effective, preventive, and fair than the AIMD algorithm with a range of mathematical factors. Rate of transmission between the sender and receivers are adjusted accordingly.