Abstract: The communication via couplings (3) for providing services defined by service parameters like video-on-demand services and audio/video calls and voice-over-internet-protocol calls and via an access system (4) for accessing a network (5) can be done more dynamically and efficiently (insight) by (basic idea) introducing service-selection-signals, service-definition-signals, service-information-signals, and by configuring terminals (1) and/or coupling-interfaces (2) and couplings (3) and the access system (4). Then users get the option of selecting one out of many services, a service-selection-server (9) coupled to and/or forming part of the access system (4) gets the service-definition-signals like for example service parameters, and couplings (3) and the access system (4) and terminals (1) and/or coupling-interfaces (2) are configured to be in conformance with said service-definition-signals. Terminals (1) are informed through service-information-signals, defining the coupling (3) to be used.