An arrangement and method for establishing and maintaining a connection
between users' communication devices via a public data network.
Communication devices belonging to users of a system are terminals of a
telecommunication network, say mobile phones, and, in addition, they are
adapted to a link to a data network via a wireless transfer system.
Interfaced with the data network there is at least one server that keeps
a register of communication devices. A communication device brought near
a data network terminal reports itself to the server using a
device-specific identifier. This reporting message also contains network
address of the terminal. When a connect request arrives from a
communication device via a terminal, the server provides for necessary
network connection if the called device specified in the connect request
can be reached.