Cyber-network
From Tardis Wiki, the free Doctor Who reference
The Cyber network was the network that linked every single Cyberman to one another. It contained their entire database and had the ability to transfer files wirelessly. (DW: Rise of the Cybermen/The Age of Steel) It could alternatively receive information from infostamps, giving them a method of exchanging information if their wireless systems were inactive. (DW: The Next Doctor)
