Abstract: A method of giving the user information on the operation of a portable device, and a portable device. In the method, an event that concerns the operation of the device and interests the user is detected by the control means of the device. If at least one silent alarm pattern producing a tactile sensation in the user is attached to the event, the user is given abstract information on the operation of the device by using at least one silent alarm pattern implemented with the alarm device and sensed by the user. Various alarm patterns differ from one another such that at least one alarm pattern characteristic sensed by the user varies. The characteristic can be the alarm pattern frequency, amplitude, changing rate of the amplitude, changing rate of the frequency or duration of the alarm pattern. One way to perform a silent alarm is vibration. The user interface is particularly intended for users with impaired hearing and/or vision.

Abstract: In a three stage non-blocking switching matrix (10), there are originating stages (12), center stages (14), and terminating stages (16). In order to establish matrix connections for either a one input/two output scenario or a two input/one output scenario, a determination must be made as to whether there is a center stage (12) common to all three ports. If so, then the matrix connection is established through the available center stage (12). If there is no common center stage (12) among the three ports, then rearrangement candidates are identified to free up an available center stage. One or more matrix connections are rearranged without affecting live traffic. After rearrangement, the matrix connection for the three ports is established through the freed up center stage (12).

Abstract: A pager belt buckle device for conveniently combining a belt buckle with a pager unit. The pager belt buckle device includes a belt buckle member having an upper elongate support portion and a lower elongate support portion being spaced apart and further having a housing portion integrally attached to the upper and lower elongate support portions and being disposed therebetween and being recessed along a longitudinal back side of the elongate support portions thus forming a belt receiving slot between the upper and lower elongate support portions; and also includes pin-like support members being removably connected to the upper and lower support portions and extending therebetween; and further includes a catch member hingedly mounted about a first of the pin-like support members; and further includes a pager assembly for receiving radio signals.