The architecture of a technical system reflects significant design decisions about the system’s organization and typically documents a description of key system elements (be they hardware or software), their composition, functioning, and interrelation. The process of creating a description of an architecture is called architecture modeling. In the telecommunication domain, the architecture leve...

Customer churn has emerged as a critical issue for Customer Relationship Management and customer retention in the telecommunications industry, thus churn prediction is necessary and valuable to retain the customers and reduce the losses. Moreover, high predictive accuracy and good interpretability of the results are two key measures of a classification model. More studies have shown that single...

Service order provisioning is an important telecommunication application that automates the process of providing telephone services in response to the customer requests. It is an example of a multi-system application that requires access to multiple, independently developed application systems and their databases. In this paper, we describe the design and implementation of a prototype system1 t...

The paper reviews achievements and history of telecommunications development and regulatory system reform in China, discusses the evolution of reform, analyses influence of regulatory system reform to chinese telecommunication industry, and finally makes some suggestions on the development of China Telecom. 1. Development of Telecommunications in China Achievements China has got significant ach...

In this paper, a new structure is provided for the dispersion compensating photonic crystal fibers in order to broaden the chromatic dispersion and increase the dispersion compensating capability in a wide wavelength range. In the structure, putting a combination of circular holes and a star structure in the inner core clad causes the dispersion coefficient profile to be broadened, and addition...

A telecommunication network produces daily large amounts of alarm data. The data contains hidden valuable knowledge about the behavior of the network. This knowledge can be used in ltering redundant alarms, locating problems in the network, and possibly in predicting severe faults. We describe the TASA (Telecommunication Network Alarm Sequence Ana-lyzer) system for discovering and browsing know...

I. DEFINITION OF PROBLEM In current conditions of dynamic development of various approaches of the analysis and synthesis of the telecommunication networks integrated into information and telecommunication technology [1-5] there are questions of elaboration and application of the general methods of ensuring service quality based on allocation of separate classes of quality and realization of ma...

A computer network management system presents one manager and several agents. The management of large networks demands much computer resources and management system capacity, impossible to achieve with just one manager. The TMN standard, that intends to standardize management systems for telecommunication networks offering those resources, already foresees the use of several managers organized ...