Buy Poly IP Table Microphone Array: Contains one Microphone Array and one 25' CAT 5E SHLD Ethernet cable. Compatible with Poly G7500 codec. (2200-85250-001)
MAX98089 TINI® Stereo Audio Codec with FlexSound™ - Analog Devices / Maxim Integrated | Mouser
voltage - MICBias Ground in audio codec - Electrical Engineering Stack Exchange