Other booster enhancements that have been proposed to the FCC include proximity detection to prevent cell tower signal overload and bi-directional signal amplification, which would improve signal transmissions from cellphones back to cell towers.

FORBES: FCC Decision On Cellular Signal Boosters Imminent

The group identified Qtera, a shop that can send an optical signal 3, 200 kilometers without amplification--40 times the distance Nortel could muster.

FORBES: Lighting up Nortel

Amplification is provided through the subwoofers, while signal processing, the tuner and all inputs and outputs reside in a separate low metallic box.

FORBES: Sounding Out Home Theater