The firm had been comprised of three lines of businesses: gear for telecom operators, large enterprises and smaller businesses.

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In tandem with the smartphone and tablet program, the Army also is testing gear that allows operators to deploy a makeshift cell network.

CNN: U.S. Army may soon equip troops with smartphones

Some executives at mobile operators in Europe said Chinese companies aren't always the least expensive suppliers of network gear.

WSJ: EU to Probe China Telecoms' Trade Practices