Patent ID: 8914547

Claim:
A communication network having a number of server units connected with each other, to each of which a number of terminals is connected in a local environment, each server unit including a processor receiving a message comprising message data, the message data comprising new or changed user data and control data, the processor saving the new or changed user data and the control data, a data storage area comprising a first partial storage area for saving the new or changed user data and a second partial storage area for saving the control data, wherein the user data and the control data can be accessed from each of the number of terminals connected to each of the number of server units, wherein in each server unit of which a synchronization module is allocated to each first partial storage area, said synchronization module, after saving the new or changed user data and in response to receiving the incoming message containing the new or changed user data and the control data, forwards the new or changed user data, but not the control data, to the respective other server units for saving the forwarded user data in each of the other server unit's respective first partial storage area.