Details on IP-based data services (GPRS, EDGE, UMTS, HSxPA) in the mobile radio system
- GPRS - Basics
Background information on GPRS - GPRS availability
Security and availability of the terminal devices in the GPRS network - GPRS - TSC and IPT
Information on the Tainy Switching Center Protocol and the IP Telemetry Protocol - List of APNs
Network Coverage (external links)
Maps of German providers: T-Mobile, Vodafone, O2, Eplus
GSM World: online maps according to countries and providers, download continental maps (PDF)
