Installation Instructions

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TM
VOS SYSTEMS LLC
AlertTrace™ FAQs
Operational Questions & Answers:
• How do the Gateways communicate with the server?
o The Gateways/Hubs communicate with the server database via cell. It requires a cellular
signal.
• What cellular network is used?
o Currently AT&T is the default network in the US. If AT&T is weak in an area we can
provide for a Sprint SIM. Outside the US we must first ascertain what carrier provides
Cat M1 in the area and then must provide a specially-provisioned SIM. By 30-Sep 2020
we expect to have a network-agnostic version of the Gateways that will automatically
connect to the strongest carrier anywhere in the world.
• How do I know if it has cellular signal?
o The middle LED shows cell connection. It blinks red when there is no cell connection,
and blinks green when cell connection is achieved.
• What is the function of the LED on the Minis?
o There are two series of LED flashes on the Mini. The first is a very brief flash every 5
seconds to show the Mini has battery power. NOTE: When the Mini is not being worn
and goes to “sleep” mode the every-5-seconds flash will stop.
o When the Mini is transmitting its collected data to the Hub, the LED on the Mini will
flash several times quickly.
• What is the range? How close does the Mini need to be to the Gateway/Hub and does that
connection need to be constant?
o Minis will generally connect to a Gateway/Hub within a radius of ~75 feet (25 meters).
However, the Mini can operate outside the range of a Hub, and will store its contacts
internally until it is back within range of a Hub.