VIA

Intercommunication systems, namely, emergency, information, area of rescue and elevator telephones, and master and substation intercoms; Free standing tower for mounting an emergency telephone to be incorporated therein; Emergency broadcast system, namely, a telephone for reporting to a central station and an audio speaker for broadcasting a tone, message or announcement from the central station; Software for verifying the integrity and recording the use of emergency and information phones; and software for operating an emergency mass notification system