21st Century Network
The 21st Century Network (21CN) programme is the network transformation project of the UK telecommunications company BT Group plc for data and voice. It had been intended to move BT's telephone network from the present AXE/System X Public Switched Telephone Network (PSTN) to an Internet Protocol (IP) system. As well as switching over the PSTN, BT planned to deliver many additional services over their new data network, such as on-demand interactive TV services.
BT originally stated that it would accrue annual savings of £1 billion when the transition to the new network was completed, and hoped to have over 50% of its customers transferred by 2008. (See External links below for current progress.) Capital expenditure was put at £10 billion over five years, this being 75% of BT's total capital spending plans in that period.
Read more about 21st Century Network: 21CN Architecture, Suppliers, Criticism
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