Abstract: Communication apparatus for interfacing between wired and wireless voice/data generating/receiving apparatuses and a physical telephone line of a communication network that comprises a telephone outlet, which is mounted within a wall of a building and includes first and second connecting means. These connecting means are electrically connected to each other and to the physical telephone line. The second connecting means allow connecting a wired telephone apparatus to the telephone line. A detachable module is designed to be completely embedded within the telephone outlet, whenever inserted into the outlet, mechanically fits into, and electrically adapted to cooperate with the outlet.

Abstract: A method of operation of a radio communications system having a controller controlling communications of a plurality of communicating units on a plurality of communication channels. The method includes the steps of a first communications unit transmitting a call request (100) to the controller and the controller reserving a first communications channel for a communications unit required in the requested call. The controller allocates the first communications channel for temporary communications to other communicating units whilst waiting for the availability of a second communications channel for the requested call, wherein the second communications channel is to be allocated to a second communications unit required in the requested call. A communications system having a channel allocation controller (12) having a list of communications channels (16) with reserved indicators (18) indicative of the status of reserved communications channels.

Abstract: A multi-user radio system, such as a trunked radio system has sets of operations ("storm plans") for execution in emergency situations. A central control and management processor is arranged to define a list of users (20) associated with a respective storm plan and to permit the defined users to execute the respective storm plan.