By 2012 BT’ are planning to deliver their new 21st Century Network which will provide one link into your building for all voice, data & video calls, replacing technologies such as ISDN and analogue lines. The £10 billion next generation network is an advanced national IP communications network for the future, customers will be able to access voice messages, data or video at any time on any device. It will be possible for users to share personal contact directory across their home phone, PC, mobile & PDA. And bandwidth will no longer be a consideration for most end-users as additional bandwidth can be requested as and when required.