Have you heard about 21CN but are not really sure what it's all about? If so, you are probabbly not alone, but help is on hand at samknows.com.

With the national migration to 21CN starting in just a few months, Sam has put together a comprehensive overview of the 21CN systems and what it will mean to the average punter in the street.

Such questions are:-

• What 21CN is and why BT are doing it
• How 21CN will affect you
• New 21CN broadband products
• A summary of the national roll-out plan
• The 21CN network structure
• What are all the 21CN related acronyms.

With the roll-out rapidly accelerating and new information arriving on an almost daily basis, he intends to keep these pages up to date with the latest 21CN developments. Check out his pages on the 21CN overview and  21CN broadband.