Performance analysis of SS7 congestion controls under sustained overload

A Strategy For The Resolution of Intelligent Network (IN) and Signalling System No. 7 (SS7) Congestion Control Conflicts

Signalling System No. 7 (SS7) networks are used to transport call control messages for both traditional telephony and advanced Intelligent Network (IN) based services. A large number of IN implementations have been successfully deployed in recent years, however a key factor in ensuring their ongoing commercial success will be that they continue to meet specified performance targets. Because net...

Benefit of Higher Priority for National Security / Emergency Preparedness Calls In Signaling System Number 7 Jansen Szeto GTE Government Systems Charles Krafthofer GTE Government Systems

Signaling System Number 7 (SS7) is a packet switched network protocol for signaling call set-up (and teardown) in the Public Switched Network (PSN). SS7 includes priorities for different types of signaling messages that determine how the messages are handled during conditions of severe signaling network congestion. Simulation results of modeling the behavior of the SS7 congestion control mechan...

Congestion Control in the MTP of SS7

An Investigation into Intelligent Network Congestion Control Strategies

Abstract This thesis examines the congestion control issues that arise in Intelligent Networks, when it is necessary to support multiple service types with different load requirements and priorities. The area of Intelligent Network (IN) congestion control has been under investigation for over a decade, but in general, the models used in this research were over-simplified and all service types w...

Simulation Of Overload Control In SIP Server Networks

In this study, we investigated a signalling load control mechanism for SIP server networks and developed a corresponding queuing model. The so-called hop-by-hop overload control, known from recent IETF drafts and RFCs, was considered and a similar buffer overload control scheme which was developed for the SS7 signalling link in ITU-T Recommendation Q.704, was proposed. The mechanism is based on...