Number Portability is the service that enables subscribers to maintain their telephone number when changing electronic communications provider.
The previous (old) electronic communications provider from whose network the number is ported out.
The new electronic communications provider, in whose network the number of the subscriber is ported.
The National Reference Database for Portability is the central and unique point of information for the providers for the Number Portability service.
The Hellenic Telecommunications and Post Commission is the Greek Regulatory authority that supervises and regulates the telecommunications and postal market.
The parties that are connected to NRDBP. Besides EETT, these parties include electronic communications providers and parties of the public or private sector after EETT approval.