Common Communications for Visiting Vehicles (C2V2) system that will provide rendezvous and navigational data to visiting vehicles approaching the station, including the new U.S. commercial crew vehicles.
Installed Expedition 41 US EVA31. One on the Starboard side facing forward, and anothe ron the Port side, facing aft.
Requires: ISS AtoZ :http://orbithangar.com/searchid.php?ID=5633