Listen to the changing sounds of telecommunications
Pick an item associated with telecommunication to listen to what it sounds like.
Listen to the various tones associated with making a telephone call.
Telephones through the years have had different ringtones - pick a phone to listen to them.
Visit the updated Communicate! galllery at the National Museum of Scotland.
Discover the records behind the history of telecommunications as BT Heritage launches online catalogue.
Last month: History of the internet learning resource
Gallery: From buttons to bytes
Fun activity: BT Tower activity
Search: History of computers
