FIRE TELEPHONE SYSTEMS

B.L. Acoustics offers a range of Fire Telephone Systems as an integral part of the PA/VA and Noise Masking Systems as part of the concept of Total Systems Solutions. These are fully monitored for all critical components and paths and independently powered for life safety. They can be tailored to the particular specifications of the complete emergency communications system, typically for use in a multi area building under a fire situation.

We provide exchange control units that satisfy to BS5839 and BS5588 standards with simple central controls. The field operations are automatic, with calls registered by the lifting of the handset. Cabinets with clear labeling provide protection and awareness. At the central panel, operations are automatic with manual latching connections and provide both audible and visual indications of all states within the system and are completely independent from all other systems and networks.

The Fire Telephone Systems are essentially powered from a d.c. source derived from the mains power supply with full battery support. All power supply conditions are continuously monitored, including active monitoring of the state of the standby batteries.

Individual remote lines require a single pair connected to the motherboard within the Central Unit. Each line can be switched in and out as required and is continuously monitored for:
- Open circuit
- Short circuit
- Telephone removal

Plug in cards can be cascaded to allow easy system expansion.