Telecommunications networks

Securing SS7 Telecommunications Networks

Signaling System 7 (SS7) defines the network architecture, configuration and message transport protocol for Public Telephone Networks (PTNs). SS7 was originally designed for a closed telecommunications community, and therefore possesses limited authentication facilities. Deregulation coupled with PTN convergence with the Internet and wireless networks significantly increase vulnerabilities, ena...

Telecommunications Networks Risk Assessment with Bayesian Networks

We propose a solution which provides a system operator with valuation of security risk introduced by various components of the communication and information system. This risk signature of the system enables the operator to make an informed decision about which network elements shall be used in order to provide a service requested by the user while minimising security risk related to service exe...

Modelling in Distributed Telecommunications Networks

The purpose of this paper is to formally describe new optimization models for distributed telecommunication networks. Modern distributed networks put more focus on the processing of information and less on the actual transportation of data than we are traditionally used to in telecommunications. This paper introduces new approaches for modelling decision support at operational, tactical and str...

Survivability in hierarchical telecommunications networks

We consider the problem of designing a two level telecommunications network at minimum cost. The decisions involved are the locations of concentrators, the assignments of user nodes to concentrators and the installation of links connecting concentrators in a reliable backbone network. We define a reliable backbone network as one where there exist at least 2-edge disjoint paths between any pair ...

Mobile Telecommunications Protocols for Data Networks Mobile Telecommunications Protocols for Data Networks