Abstract: The present invention relates to a communication device. It includes a connection unit having a plurality of input contacts. At least two input contacts are coupled to a network. The input contacts are usable according to a first network protocol and a second network protocol different from the first. The device also includes a detection module which is configured such that a use of the connection unit according to the first or the second network protocol can be identified based on input signals of at least a first and a second input contact. The device further includes a function module which can be configured based on the network protocol identified by the detection module such that a communication of the communication device according to the identified network protocol can be enabled by the function module.