Abstract: An orthotic frame has proximal and distal frame members joined by a knee joint, and a foot support joined by an ankle joint to a distal end of the distal frame. A knee actuator connected between the proximal and distal frame members has a selective stiffness allowing selection of a relatively rigid stiffness during stance and a relatively flexible stiffness during swing. The stiffness of the knee actuator is selected according to the gait cycle, either mechanically according to dorsal flexion of the ankle joint or electronically according to gait cycle phases recognized based on read sensor data. An ambulatory unit gathers data from sensors located on the orthotic frame. Sensor data may be provided to a base unit for diagnostic and biomechanical evaluation, or evaluated by the ambulatory unit to control active components of the orthotic frame according to the recognized gait cycle phases for functional compensation.

Abstract: The invention relates to a subscriber service implemented in a telecommunications network (301). The subscriber service is used by a called B-subscriber (MS1), wherein the B-subscriber is able to control the call connection sequence by means of the subscriber service in the event of a call request from a calling A-subscriber (A1). Two separate connections are set-up when the call request is sent from the A-subscriber to the B-subscriber. If the B-subscriber accepts the call, the connections are interconnected in a service node (303). When the B-subscriber chooses to utilize the subscriber service, the subscriber number of the A-subscriber is stored in a memory (304) and the A-subscriber is informed that the B-subscriber will call back later, whereafter the call request is terminated and the two separate connections are released. The B-subscriber is then able to call the A-subscriber with the aid of the subscriber service, while using the A-number stored in the memory (304).