Open network architecture


In telecommunications, and in the context of Federal Communications Commission's Computer Inquiry III, Open network architecture 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:
  1. Basic serving arrangements
  2. Basic service elements
  3. Complementary network services