Abstract: A mobile radio telephone or portable hot link communicator is described which provides a simple, efficient and effective means of communication to enable a child or elderly person to communicate with a known parent, relative or friend carrying a standard mobile telephone. The hot-link communicator is wrist worn or hangs from a cord around the wearer's neck. The hot-link communicator comprises a preprogrammed module that links it with preferably only one other mobile or fixed telephone. The hot-link communicator comprises very basic functionality and, in some embodiments, no display—only a preprogrammed dialing button and an answer button. The hot-link communicator makes possible communication between parents needing to communicate with their children and between supervising adults and elderly persons needing assistance in that the children and elderly persons do not need to input number in sequence via a key pad or search for a telephone in the rain and dark.

Abstract: A method for operating a radio telecommunications system comprising a mobile station and one or more cell site units capable of communicating by radio with the mobile station on at least two communication channels; the method comprising: the mobile station receiving signals on each of the communication channels; and the mobile station determining an estimate of the level of interference with signals on each of the communication channels.

Abstract: A mobile radio telephone or portable hot link communicator is described which provides a simple, efficient and effective means of communication to enable a child or elderly person to communicate with a known parent, relative or friend carrying a standard mobile telephone. The hot-link communicator is wrist worn or hangs from a cord around the wearer's neck. The hot-link communicator is comprises a preprogrammed module that links it with preferably only one other mobile or fixed telephone. The hot-link communicator comprises very basic functionality and, in some embodiments, no display—only a preprogrammed dialing button and an answer button. The hot-link communicator makes possible communication between parents needing to communicate with their children and between supervising adults and elderly persons needing assistance in that the children and elderly persons do not need to input number in sequence via a key pad or search for a telephone in the rain and dark.