Expansion (EX) microphone kit for SoundStation IP6000, VTX1000. Inc 2xmics, 2x2.3m cables. by Polycom SKU: 2215-07155-001 Please log in to see price or purchase this item Quantity discounts available QuantityPrice DescriptionDescriptionExtend the VTX & IP6000 for more clarity and more participants with a pair of expandable mics.