Expansion Microphones - Increase the audio coverage of your conference room by pairing the Expansion Microphone with your SoundStation conference phone. | Poly, formerly Plantronics & Polycom
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Amazon.com : Polycom Realpresence Trio 8800 External Microphones - Black (Pack of 2) : Office Products
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Amazon.com: Polycom Expansion Microphone Kit for Poly Trio C60. Includes Two Expansion Microphones W (2200-86430-001) : Electronics
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Amazon.com: Polycom Expansion Microphone Kit for Poly Trio C60. Includes Two Expansion Microphones W (2200-86430-001) : Electronics
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