Sec.  27.1132   Protection of Part 21 operations.

   All AWS licensees, prior to initiating operations from any base or fixed
   station, must coordinate their frequency usage with co-channel and adjacent
   channel incumbent Part 21 MDS licensees operating in the 2150–2155 MHz band.
   In the event that AWS and MDS licensees cannot reach agreement in
   coordinating their facilities, either licensee may seek the assistance of
   the Commission, and the Commission may then, at its discretion, impose
   requirements on either or both parties.