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Deutsche Telekom AG - Interim Group report - January 1 to March 31, 2011

75Additional information Fixed-network lines. Lines in operation excluding internal use and public telecommunications, including IP-based lines. The totals reported in the interim Group management report were calculated on the basis of precise figures and rounded to millions. Percentages were calculated on the basis of the figures shown. Fixed network: Resale. Sale of broadband lines based on DSL technology to alternative providers outside Deutsche Telekom, including bundled IP-Bit- stream Access (IP-BSA). In the case of IP-BSA, Deutsche Telekom leases DSL lines to the competitor and transports the datastream carried over these lines. Flat rate. Rate plan for network access with unlimited online time and data volumes. Free cash flow. Cash generated from operations less interest paid and net cash outflows for investments in intangible assets (excluding goodwill and spectrum investment) and property, plant and equipment. Gigabit. 1 billion bits. Unit of measurement of data transfer rates. Grid computing. Grid computing is a form of distributed computing whereby a supercomputer is created from a cluster of loosely coupled computers. The difference between grid computing and conventional computer clusters lies in the considerably looser coupling, the heterogeneity and the broad geographi- cal distribution of the computers. In addition, a grid is usually established for a specific application and often uses standardized program libraries and mid- dleware. Gross debt. Gross debt includes not only bonds and liabilities to banks, but also liabilities to non-banks from promissory notes, lease liabilities, derivative financial liabilities and cash collateral received for positive fair values of deriva- tives, as well as other interest-bearing financial liabilities. GSM – Global System for Mobile Communications. Global standard for dig- ital mobile communications. HDTV – High Definition Television. Generic term describing a range of tele­ vision standards that differ from conventional television through increased vertical, horizontal and/or temporal resolution. Home gateway. Central device used for remotely controlling electronic house- hold appliances from anywhere. Hosting. Provision of storage capacity via the Internet. An Internet service provider’s most important services in relation to hosting are registering and operating domains, leasing Web servers (in full or in part) and leasing space in a computer center – including Internet connections, regular and emergency power supply, etc. HSDPA – High Speed Downlink Packet Access. Packet-based protocol that enhances data rates in UMTS networks and lifts transmission speeds into the megabit range. HSPA+ – High Speed Packet Access Plus. A higher-performance variant of HSDPA/HSUPA that further shortens ping times and is therefore ideal for data- intensive mobile applications. HSUPA – High Speed Uplink Packet Access. HSUPA technology accelerates data upstreaming from mobile devices into the network and significantly re- duces transfer durations (ping time). ICT – Information and Communication Technology. Infotainment. A contraction of the words information and entertainment. Internet/intranet. The Internet is a worldwide Internet Protocol (IP)-based com- puter network that has no central network management. By contrast, intranets are managed IP networks that can be accessed only by specific user groups. Internet Service Provider. An Internet service provider offers various technical services that are required to use or operate Internet services, usually in return for a fee. IP – Internet Protocol. Non-proprietary transport protocol in layer 3 of the OSI reference model for inter-network communications. IPTV – Internet Protocol Television. A system whereby a digital television service is delivered using the Internet Protocol. Refers to the digital transfer of television programs and films over a digital data network using the Internet Protocol (IP). Joint venture. Two or more companies set up a joint enterprise for cooperation. LAN – Local Area Network. A computer network restricted to company premises or a campus. LTE – Long Term Evolution. LTE is a further development of 3G (UMTS, HSDPA, HSPA) and is also referred to in the industry as the fourth generation of mobile communications (4G). LTE introduces a new wireless transmission method that requires new handsets and adjustments to the mobile communica- tions network. LTE supports speeds of over 100 Mbit/s in the downlink and 50 Mbit/s in the uplink.