The latest Iridium 9555 firmware (HT09014) is not compatible with one vendor's docking station. To make full use of this particular docking station the Iridium must be downgraded to the previous firmware version (HT09007). The docking station vendor has successfully tested a new beta version of firmware, but there is no word yet on when Iridium will release it. Docking stations provide a fixed location for the satellite phone in a building or vehicle. They usually support multiple interfaces such as RJ11, USB data, hands-free, external antenna, etc.