Data node SGSN communicates with the radio part of the GPRS network. To transmit data to other packet networks, such as the Internet, the GGSN data gateway is used, which acts as a router. APN (Access Point Name) is used to give the user access to defined networks. In this way, the operator can reserve access to a given APN only to a defined set of SIM cards and thus create a private group of users in the GPRS network, whose traffic is strictly separated from other traffic. It follows from the above that it is possible to create both public and private data networks in this way, and it is also possible to tariff individual operator services in different ways according to APN, such as WAP (Wireless Application Protocol) or MMS (Multimedia Messaging Service).

Internet access is possible thanks to WAP technology, which makes the content of web servers and their information services available on mobile terminals even using low capacity channels and displays with a limited display range. The application of data communication and WAP is enabled in the entire range of GPRS technology with packet-oriented transmission and extended transmission speed theoretically up to 192 kbps. However, the introduction of this service required much more extensive and costly interventions not only in the structure of the GSM network but also in mobile devices.