The BT 6510 Twin is very easy to set up thanks to the set up wizard allowing you to be making calls straight as quick as possible. The new screen design makes using features like call waiting, three way calling and call divert easy to use. The type II caller display will show the number calling, if that number matches a number within your saved phonebook their name will appear when the number calls. Block Nuisance Calls this feature allows you to choose which calls you answer, and which calls are sent straight to the answer machine. For example, you can block all International and Withheld numbers, cutting out a large proportion of unwanted sales calls. A built in answer machine with 30 minutes recording time means that you can go away and be reassured that all messages will be saved. You can even use the remote access feature that allows you to check your messages from any external phone.