Deutsche Telekom

About: Deutsche Telekom is a company organization based out in Welwyn Garden City, United Kingdom. It is known for research contribution in the topics: Telecommunications network & Terminal (electronics). The organization has 3473 authors who have published 5208 publications receiving 65429 citations. The organization is also known as: DTAG & German Telecom.

Virtual subscriber management

Abstract: Virtual Broadband Remote Access Server (BRAS) Cluster comprising - at least two BRAS, each of the BRAS comprises a Data Plan, Control Plane, Management Plane; - wherein a common control plane and a common management plane spans over the at least two BRAS, implementing a redundancy on the Virtual BRAS cluster by providing the functionality of the control and management plane, by controlling and managing the at least two BRAS; the common control plane and a common management plane being the external access point to the virtual redundant BRAS, wherein in case of a failure of one of the BRAS the common control and common management plane, switchover the functionality to the working BRAS.

Method for measuring unidirectional transmission characteristics such as packet propagation time, fluctuations in propagation time and results derivable therefrom, in a telecommunications network

Abstract: A method for measuring unidirectional transmission properties, e.g., packet delay, delay-time fluctuations, and results derivable therefrom, in a telecommunications network. Test packets are transmitted from a first measuring computer via a measurement path to a second measuring computer. The first measuring computer records the departure time of the outgoing test packet. This clock time is transmitted along with the test packet. The second measuring computer records the arrival time of the test packet. In a subtraction operation between the departure time from the first measuring computer and the arrival time in the second measuring computer, the delay time of the test packet, i.e., the measuring result, is determined. To determine the measuring result, the two measuring computers are synchronized in time by satellite systems, e.g., GPS (global positioning system), in that the clock time is continuously transmitted to both measuring computers.

Fusion of Acoustic and Linguistic Features for Emotion Detection

Abstract: This paper describes a system that deploys acoustic and linguistic information from speech in order to decide whether the utterance contains negative or non-negative meaning. An earlier version of this system was Passed QA to the Interspeech-2009 Emotion Challenge evaluation. The speech data consist of short utterances of the children’s speech, and the proposed system is designed to detect anger in each given chunk. Various frame-based cepstral, prosodic and acoustic features are extracted automatically and classified by means of a support vector machine. An automatic speech recognizer transcribes the utterances and yields a separate classification, based on the degree of emotional salience of the words. The emotionally salient words are computed on word hypotheses, so that un-transcribed training data is sufficient. Late fusion is applied to make a final decision on anger vs. non-anger of the utterance.

A Service Broker Providing Real-Time Telecommunications Services for 3rd Party Services

Abstract: Modern telecommunication networks and classical roles of operators are subject to fundamental change.Many network operators are currently seeking for new sources to generate revenue by exposing network capabilities to 3rd party service providers.At the same time we can observe that applications on the World Wide Web (WWW) are adding more and more (real-time) communication features, mostly without involving telecommunications operators.This report describes our approach to include telecommunications service enabler into WWW mashups or other 3rd party applications by defining a policy-based service broker that mediates between the 3rd party applications and real-time communication service enablers. Furthermore, defined policies serve besides service access definitions as a flexible expression for user/service-specific capabilities.

Untersuchung der Lebenszykluskosten von IT-Anwendungen

Abstract: IT management focuses on planning and developing new IT solutions. The importance of production (operation, support, maintenance) and further development of existing solutions is often neglected, although these tasks are responsible for the majority of today’s IT costs. The paper introduces a life cycle model for IT application systems and presents the results of a survey of the life cycle costs of 30 IT application systems. Within the survey, the distribution of costs over the application life cycle was recorded and evaluated. The results show the central importance of recurring costs for production and further development. For a production time of 5 years these costs amounted to 79% of all life cycle costs, whereas only 21% of the costs were incurred during the planning and initial development stages.