Product Description; Globalstar System; Fixed Access Unit (Fau) - Globalstar FAU200 SAT Installation Handbook

FAU Installation Handbook

Product Description

Globalstar System

Globalstar is a low earth orbit (LEO) satellite-based telecommunications network
offering wireless telephone services worldwide. The Fixed Access Unit (FAU)
provides an interface for the end-user to access the Globalstar satellite network.
The FAU communicates using the Globalstar Air Interface (GAI) via the satellite
constellation to a number of groundstations or Gateways.
The gateway interconnects the Globalstar satellite network through a Cellular Switch
directly into the local Public Switched Telephone Network (PSTN). A diagram of the
Globalstar network is shown below.
The FAU is installed outdoors to provide an unobstructed view of the orbiting
satellite constellation, and cabling is run from the unit to a conventional telephone
socket mounted indoors, for easy connection of a telephone.

Fixed Access Unit (FAU)

The FAU comprises a single unit formed from a die-cast aluminium case enclosed
on four sides by moulded polycarbonate sunshields. Access to the single circuit
board contained within the aluminium case, is via the removable aluminium
backplate. The plate is secured using tamper-proof fixings.
Twin antennas - transmit and receive - attach to the top of the case using captive
screw fixings. The receive antenna incorporates a Low Noise Amplifier (LNA).
The mechanical design of the FAU is common to two applications and provides the
end user with an interface for connecting a standard telephone:
• Residential FAU - allowing connection of a telephone.
• PABX FAU - allowing connection of a range of PABXs.
2
Typical Satellite Link