Logical diagram of a country VoIPON is shown below. This simple idea can be used in many countries of Europe. The topology is very powerful and very reliable for voice transitting between VoIP-VoIP or VoIP-TDM networks. Connection of more VoIP networks to VoIPON is extremely fast and easy.
Logical diagram of the international VoIPON is shown below. This concept combines two level telephone networks. First level of VoIPON for every country (for example, Czech or Slovak networks) and second level of VoIPON for all the world.