A service feature server makes it possible to provide service features in addition to the service features that are already provided in a telecommunications system. A separate module is provided for this purpose in the telecommunications system, which coordinates the calling of service features on the service feature server and on the telecommunications system, and controls the presentation of the corresponding service features on an operator switching position. The operator switching position is intended to be, for example, a personal computer, for which an operator interface need be created only for the additional service features. Access is made to the standard operator interface in order to use standard service features, and to the additional operator interface for the additional service features. In particular, the new functionality offers the operator a plurality of queues, which he or she can access separately.