Key Features:
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Mfr. Part #:HF-R(BK) Unit/780133
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NEC External Handsfree Unit
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Provides full-duplex speakerphone quality by providing an echo canceling circuit.
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Environmental conditions will determine performance.
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Each terminal with an HF-R Unit installed requires power from an AC-R (780109) Unit (Not Included, Sold Separately)
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