5InstALLAtIon And opErAtIon MAnUAL 25-13400-C May 2019 www.eaton.com1. Introduction1. IntroductionThe VoCALL 5 Emergency Voice Communications System (EVCS) is a fixed, secure,bi-directional communication system to assist fire fighters in an emergency in highrise buildings or large sites where Radio communication may not work, and coversthe operation of both fire telephones, disabled refuge systems and EmergencyAssistance Alarms.VoCALL 5 is designed to fully comply with BS5839-Part 9 for use as a fire telephonesystem, disabled refuge call system or as a combined system when both firetelephones and disabled refuge points are required.1.1 SuitabilityEmergency voice communication systems are recommended for all public buildingsand multi story buildings by local codes of practice such as BS9999.Disabled refuge systems are recommended in buildings where public or disabledstaff gain access to any floor other than the ground floor using lifts.1.2 Product OverviewA VoCALL 5 line exchange unit comprises of 2 functional blocks, the VoCALL 5 lineexchange unit and the outstations, (Type A, Type B, Jack Points and EmergencyAssist Alarm), with the quantities of these basic units being adjusted tosuit the application.VoCALL 5 has been designed on a star topology consisting of spurs formedfrom 1-- off two core 1mm CSA cables (soft skin enhanced up to 500m per leg,MICC 200m per leg) to each outstation. Please follow local codes of practice forcable types and wiring routes.1.3 Retrofit compatibilityIf you are replacing an existing EVCS system with this unit then a test forcompatibility must be carried out on the outstations, and any units which do notfunction as expected must be replaced with new units. This advice also applies to allroaming handsets.