The headset could be wired or wireless, ear-bud style or more conventional, wired or wireless, or even mono or stereo. Users ... Voice-tube Technology A voice tube is a gently curved plastic tube, which can be easily positioned by the user for optimum ... Some of Plantronicsa#39; customers in India are: Convergys, GE, Daksh, American Express, Wipro-Spectramind, and Dell. Its headsets are supported by availability of spares, wide range of accessories, and a telephone hotline support.
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