"Polycom 25 Foot EX Mic Cables, Item # 2200-41220-003 The Polycom 2200-41220-003 is a 25 foot mic cable pair for SoundStation VTX 1000, which is a fully automatic conference phone featuring VTX wideband voice and automatic gain control
2200-41220-003 Features: 25 Ft. Expansion Mic Cable Pair (2 Cables), For Soundstation EX, Premier EX, SoundStation2 & Soundstation VTX1000, Polycom expansion microphones come with 6 or 7-Foot microphone cables. Add 2200-41220-003 for larger conference room settings."