Deutsche Telekom AG - The 2009 financial year

HSDPA – High Speed Downlink Packet Access. Packet-based protocol that enhances data rates in UMTS networks and lifts transmission speeds into the megabit range. HSUPA – High Speed Uplink Packet Access. HSUPA accelerates data upstreaming from mobile devices into the network and significantly reduces transfer durations (ping time). This makes HSUPA the ideal complement to HSDPA on T-Mobile’s network. Together, HSDPA and HSUPA ensure that users can surf the Internet or work in the intranet while on the move, experiencing a similar level of user comfort as with fixed-network DSL. ICT – Information and Communication Technology. Interconnection. Term used to denote the connections between networks run by various providers, as regulated by the German Telecommunications Act. Internet/intranet. The Internet is a worldwide Internet Protocol (IP)-based computer network that has no central network management. By contrast, intranets are managed IP networks that can be accessed only by specific user groups. IP – Internet Protocol. Non-proprietary transport protocol in layer 3 of the OSI reference model for inter-network communications. IP address. Each computer that is connected to the Internet has a clearly identifiable, numeric address, the IP address, comprising four sequences of digits that are separated by periods, e.g.: 217.247.84.89 (example: T-Online). Static IP addresses enable the same computer to be contacted under the same address at any time (e.g., by a Web server). Dynamic IP addresses are allocated for instance to T-Online customers dialing up to the Internet. They receive an unoccupied IP address which will not be the same every time. Download. Refers to the downloading of files from a remote server over networks such as the Internet or mobile communication connections onto a local computer or other client, such as a cell phone. DSL – Digital Subscriber Line. In Deutsche Telekom’s service portfolio as: ADSL (Asymmetrical Digital Subscriber Line) for private end-customer lines: Technology used to transmit data at fast rates (between 16 kbit/s and 640 kbit/s upstream; up to 8 Mbit/s downstream) via standard copper wire pairs in the local loop within a radius of approximately three kilometers. ADSL2+: Successor product to ADSL that raises the maximum data rate to 16 Mbit/s (downstream) or 1 Mbit/s (upstream). VDSL (Very high bit rate Digital Subscriber Line) is a new technology used to transmit exceptionally high data rates (10 Mbit/s upstream, 50 Mbit/s downstream) via a fiber-optic network. Dynamic net-centric sourcing. See cloud services. Flat rate. Rate plan for network access with unlimited online time and data volumes. GSM – Global System for Mobile Communications. Global digital mobile communication standard. HDTV – High Definition Television. Generic term describing a range of television standards that differ from conventional television through increased vertical, horizontal and/or temporal resolution. 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. 225Boards, seats, and further information Glossary