Each Party owns the Intellectually Property Right (IPR) of their proprietary OSS Interface. Any development, manufacturing and selling worldwide, to such applicable interfaces relevant functionality require a license.
OSSii offers a possibility for above mentioned licensing between independent software vendors and Network Element Provider. With OSSii Operators do not need to mediate between Network Element providers and ISVs. E.g. documentation and change management related information transfer does not require actions by operators, and testing can be done against NEPs lab equipment.