Abbreviation of "Next Generation Network", translated "network of the next generation". All services and applications based on the Internet Protocol (All IP) are assigned to the Next Generation Network. A broadband connection serves as a transport platform for all these services and applications. The central protocols for IP telephone in NGN are SIP and RTP. Apart from VOIP NGN offers additional usage options such as UMS (unified messaging service), audio and video streaming. As an extension to the usual Internet telephony, a specific bandwidth of broadband Connection reserved by the provider for telephony and on the network side by Quality of Service (QoS) prioritized over other payloads.