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Introduction
An EVCS is a fixed, secure, bi-directional, full duplex voice communication system to assist fire fighters in an emergency in high
rise buildings or large sites where radio communication may not work, and covers the operation of fire telephones, disabled refuge
systems and the Disabled Toilet Alarm.
The Emergency Voice Communications System (EVCS) is designed to fully comply with BS5839-Part 9:2011
(abb. Pt9) for use as a fire telephone system, disabled refuge call system or as a combined system when both fire telephones and
disabled refuge points are required.
Suitability
Fire telephone systems are recommended for all public buildings and multi story buildings over four floors by BS9999.
Disabled refuge systems are required by Building Regulations Approved Document B for all non-domestic dwellings. Building
Regulations Approved Document B also requires all buildings where the public or disabled staff gain access to any floor other than
the ground floor using lifts or stairs are required to exit.
Product Overview
A Compact 9 unit comprises of two functional blocks; the master handset and outstations (type A, type B, duo, jack
points or disabled toilet alarm), with the quantities of these basic units being adjusted to suit the application, a maximum of 19
outstations can be used for this system. Other sized EVCS systems are available.
The Compact unit (EVCS) has been designed on a star topology. In most cases this will reduce the cable requirements
compared to all ring based systems. The topology consists of spurs, with each spur consisting of 1 off 2 core 1mm CSA cables
(see Cable Guidance for Network and Outstations section for cable type). Each spur can be up to 500m.
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