The AMT-5 Emergency Call Box (AMT5-ECB) is a hands-free emergency intercom device that connects and integrates to the AMT-5 CAN network. When not used for making calls, it can form part of a speaker network and behaves in the same way as a powered speaker (AMT-5 PAS) with integrated ambient noise sensor.
Calls are managed by one or more controlling nodes on the CAN network. Calls can be initiated by a controlling node or initiated by operating the push button on the front of the ECB. In the push button case the call is managed by a controlling node, with a mechanism for handing over call setup should a controlling node fail during the call setup process.
Controlling nodes can route the call to another AMT-5 device or through a gateway device to an external system including Tetra radio or a VoIP phone.
The ECB has the same self-test functions as the AMT-5 PAS speakers. A health LED is lit while the ECB unit is operational. It is extinguished when a fault is detected.
AMT5-ECB-A technical specifications:
|Physical – main body1|
Physical – Face Plate2
|Input Voltage||24V DC|
Two independent PSU input lines available
|Power Output||6W RMS|
|Frequency Response||100 Hz – 15 kHz|
|Streaming Audio input||8 kHz PCM
8 kHz G.711
16 kHz PCM
16 kHz G.711
|Volume Control||Set by control unit. Automatically compensated for background noise using the integrated microphone.|
|Physical Standard||CAN 2.0B|
|Connector||Male DB9 Sub or M12|
Inputs and Outputs
|Operating Temperature||-25º C to 70º C|
|Humidity||5% - 95%|
The dimensions of the AMT-5 ECB quoted are the standard device measurements. A custom housing can be designed where the standard dimensions are not suitable.↩︎
The AMT-5 ECB mounts on the train’s interior wall and has a steel faceplate with a polycarbonate adhesive decal with surface finish and graphics customized to the customer’s requirements.↩︎