Abstract: The present invention relates to a telephone handset, a base and an associated method for updating the software of the handset. The communication base comprises a radio interface to communicate with a communication device operating by means of a software application, a charger circuit and a means of detecting a new version of the software. The communication base comprises a means for notifying the device, via the radio means, of the availability of the new software version and a means for transmitting the new software version to the device when the charger circuit is connected to the battery charging circuit of the device.

Abstract: The invention concerns a local combined telephone and an alarm system comprising a central base communicating through two-way radio channel, according to a multiple access communication protocol, with telephone stations and detectors adapted to detect an emergency situation. The base transmits at regular intervals of less than 10 minutes, scanning messages addressed to the detectors and determines whether the detectors are operating, depending on whether it receives clearance messages from the detectors.