Communication in Elevator Shafts
In the default mode, 2N Lift8 (L8) operates as a communication system providing mutual communication and control room connection for the audio units located in the elevator shaft. The system is controlled by the Central Unit (CU), which ensures the interconnection of the connected audio units and the central control room. The elevator cabin, shaft and machine room audio units are connected to the CU via splitters. Each splitter is designed for use in one elevator shaft. The CU is equipped with an internal splitter of its own. Up to 7 additional splitters can be connected to the CU. Hence, the 2N Lift8 system is capable of ensuring communication for up to 8 elevator shafts (CU + 7 splitters). Up to 8 audio units can be connected to the splitter depending on the Lift8 CU batch.
Up to 7 audio unit locations are available within each elevator:
Cabin 1 roof
Inside cabin 1
Under cabin 1
Shaft bottom
Cabin 2 roof
Inside cabin 2
Under cabin 2
A Fireman audio unit or an MEEF evacuation audio unit can be connected to the system, being located outside the shaft and activating the priority call with the elevator cabin.
Basic Features
Up to 8 elevator connectivity
Variable communication interfaces (ethernet, PSTN, GSM, UMTS, VoIP, LTE)
Audio units for the cabin, shaft, machine room, emergency services
Optimum acoustic properties
In-built backup rechargeable battery
Easy control and configuration – voice menu
Checking call function
Elevator blocking option during connection error
Internal communication – Triphony
Remote maintenance
Periodical automatic function check
Configuration via phone or PC (USB/Internet)
USB interface
User message recording option
Local control option (InterCom)
Fireman function
System diagram
Example of 2N Lift8 Central Unit, Splitter and Audio Unit Wiring
Main bus
Bus (audio units)
