In telecommunications, and in the context of Federal Communications Commission's (FCC) Computer Inquiry III, Open network architecture (ONA) is the overall design of a communication carrier's basic network facilities and services to permit all users of the basic network to interconnect to specific basic network functions and interfaces on an unbundled, equal-access basis.
The ONA concept consists of three integral components:
- Basic serving arrangements (BSAs)
- Basic service elements (BSEs)
- Complementary network services
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