In a competitive multiple carrier global
telecommunications environment, the efforts to
develop advanced cooperative traffic routing and
network control techniques and the formation of a
coalition of carriers to realize these techniques are
the major steps to cost effective provisioning of
international telecommunications services.
Without additional investment in network
capacity, dynamic routing can exploit
international carriers network idle circuits and
consequently improve the completion rate of
international calls. In the multiple
carrierslvendors environment, a global network
administration process may not be centralized
because of both technical and business reasons.
Control actions by individual carriers should be
sufficient to maintain the stability of the highquality
cooperative international network.
The Worldwide Intelligent Network (WIN) Study
Group, consisting of international
telecommunication administrations, was formed to
examine the feasibility and economic benefits of
advanced traffic routing and network control
techniques.
The WIN group aims to develop robust global
network operation and traffic routing control
techniques. Based on the network-state-dependent
concepts and the distributed network management
principle, the data exchange systems based on
Telecommunications Management Network
(TMN) were developed and near real-time traffic
network management data are exchanged for
network control. The WIN data enables detection
of traffic congestion and circuit failures, and
provides information essential for effective traffic
controls. The data exchange focuses on
improvement of international transit traffic, i.e.
traffic that is routed via a transit carrier. Based on
extensive field trials, simulations, modeling, and
operation experience in the past several years,
participating telecommunication administrations
reported substantial benefits, in the area of call
completion as well as determination of the
network element in failure condition.