Openreach, the functional department of BT which manages infrastructure, has commenced talks on the mammoth task of switching 16 million UK landlines by the year 2025. This step is part of the long-term plan to move telephony from the traditional PSTN network to the internet based platform of which VoIP

The voice communications market is inexorably moving away from the traditional PSTN model to one based on IP services that delivers voice traffic via the internet. This has seen a shift away from established service providers to a new generation of wholesale carriers offering services to other businesses supported by