Designed for indoor or outdoor use, the new GSM Commander offers wireless communications to provide a completely standalone telephone installation. The GSM phone greatly reduces installations costs by eliminating running wires. The battery and GSM terminal are housed inside the unit to provide a complete rugged telephone. The unit can be mains, battery, or solar powered, with the internal lead-acid backup battery and phone working in temperatures of - 20 to +60 degrees, ideal for hostile environments. The Quad-band GSM module covers wireless ranges across most of the globe. Advanced features of the telephone include an internal memory for local digital recordings, and over-the-air updates and remote management to reduce site visits and maintenance costs. The Commander family of telephones are tough, weather resistant units built to withstand abuse and environmental extremes. The Commander body is moulded in glass filled polyester to prevent rust and corrosion, and is simple to install. Typical installations include civil construction sites, bus or rail stations, retail, and temporary events (festivals, construction, exhibitions), anywhere that laying cable is prohibitive.