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The Compañía Telefónica Nacional de España (CTNE, `Telefónica' in colloquial speech then) was incorporated in 1924. It was a strategic move of New York-based holding ITT. In contrast with a landscape of State-owned networks across Europe, Telefónica was the subsidiary of an American corporation, with internal organization, procedures and ideas that revealed that origin. We study the influence...
The voice networks have evolved drastically since its invention toward the ending of the 19th century. It evolved from the manual exchange to electromechanical automatic exchanges. It further evolved to analogue electronic exchanges and now to digital exchanges. Voice is very sensitive to delays and delay jitters, and that implies that its associated networks have to be connection oriented and therefore...
The Next-Generation Network (NGN) is currently under development. Supporting 3rd party SIP applications on NGNs is necessary in order to improve the services provided to NGN subscribers. We propose using certain function in order to fully open up NGN and allow 3rd party service providers to offer services running on SIP application servers. If the deployment objectives of our proposed functions are...
With the saturation of existing intelligent network services, it is becoming increasingly difficult to develop new profitable services. The current trend seems to be moving toward the convergence of traditional telephone networks with the Internet. The capabilities of Internet terminals, such as PCs, are more powerful than those of traditional terminals for telephone networks, particularly in terms...
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