The ViLX-OSC is a combined Type A and Type B outstation as defined in BS5839-9:2011, and can be used as a fire telephone or a disabled refuge call point. The Lexicomm outstations are designed for use by multi-disability users, having high contrast signage in line with RNIB guidelines and an induction loop coil (to BSEN60118-4) in the handset. ViLX-OSC outstations are mainly used when the disabled refuge area is located within the fire fightinh lift lobby, as described in BS9999 and Building Regulations Approved Document B, these locations should have a low background noise otherwise you may have to consider acoustic hoods