bceb2d6f__Names_Supporting_Organization__Implementation_Guideline
[0] IG I [IPC Comments] IPC supports the use of external dispute providers in the same manner as existing UDRP mechanisms, but simply notes that this should not be necessarily to the exclusion of the ICANN Board. There may be decisions that only the ICANN Board can resolve and such issues should not be overlooked or not dealt with simply because there is no external dispute provider available to resolve it. [Implementation Guideline] 
External dispute providers will give decisions on complaints.
PART ONE -- POLICY DEVELOPMENT PROCESS | Generic Names Supporting Organization
Implementation Guideline