Expansion Microphones - Increase the audio coverage of your conference room by pairing the Expansion Microphone with your SoundStation conference phone. | Poly, formerly Plantronics & Polycom
POLYCOM SOUNDSTATION DUO with 2 Extension Microphones - SingaporeTouchLCD.com
Amazon.com : Polycom Realpresence Trio 8800 External Microphones - Black (Pack of 2) : Office Products
Extended Mic Cables – 25 foot, Pair for Polycom IP7000 | Business Telecom Products
Expansion Microphones - Increase the audio coverage of your conference room by pairing the Expansion Microphone with your SoundStation conference phone. | Poly, formerly Plantronics & Polycom