POLYCOM SOUNDSTATION IP 4000 Extension Microphones 2200-07155-002
Polycom Soundstation2 Extension Microphone
Polycom Soundstation 2 with Wall Unit / 2X Extension Mics and Cables -- CC1 | eBay
Polycom Extension Microphones 2 Kit for Soundstation2 EX | Sales-Tele
Polycom Polycom SoundStation 2 EX Microphones (2201-07155-005) Audio Conference Station for sale online | eBay
Expansion Microphones - Increase the audio coverage of your conference room by pairing the Expansion Microphone with your SoundStation conference phone. | Poly, formerly Plantronics & Polycom
Amazon.com : Polycom SoundStation 2 EX with 2 Mics Included (2200-16200-001)+(2200-16155-001) : Office Products