- - Press release DC06-456 September 4, 2006, BT announces details of first live customer upgrades to 21st Century Network in Cardiff
- - BTPLC Various
- - Wikipedia 21CN, http://en.wikipedia.org/wiki/BT_21CN
- - BT Wholesale Markets, 21CN Supplies Presentation, 9 September 2004
- - Networks and systems for BT in the 21st century, BT Technology Journal Vol 23 No 1 January 2005, M H Reeve, C Bilton, P E Holmes, M Boss
- - A new sen/ice infrastructure architecture, BT Technology Journal Vol 23 No 1, P Crane
- - The common capability approach to new service deployment, BT Technology Journal Vol 23 No 1, B Levy
- - Intelligence and mobility for BT’s next generation networks, BT Technology Journal Vol 23 No 1, M Wardlaw
- - The application environment, BT Technology Journal Vol 23 No 1, J Darling and A Sauvage
- - 21CN Communications Providers Presentation, 2006
- - Consumers in the 21CN World Presentation, 2006
- - Corporate and Public Sector in the 21CN World Presentation, 2006
- - 21CN Main Brochure Presentation, 2006
- - SME in the 21CN World Presentation, 2006
- - BT Wholesale Markets, Delivering 21CN, July 2005
- - Various, 2006
