AIMS Workshop Heidelberg, 9-11 March 1998 1 EURESCOM P616 ENHANCED ATM IMPLEMENTATION ISSUES OVERALL RESULTS Augusto Casaca Portugal Telecom.

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AIMS Workshop Heidelberg, 9-11 March EURESCOM P616 ENHANCED ATM IMPLEMENTATION ISSUES OVERALL RESULTS Augusto Casaca Portugal Telecom

AIMS Workshop Heidelberg, 9-11 March EURESCOM P616 ENHANCED ATM IMPLEMENTATION ISSUES Project objectives: to advance the specification of a wide area ATM VC switched network, by completing open issues in the specifications achieved in previous EURESCOM ATM projects. Task 1 - Network Architecture Task 2 - Congestion Control Task 3 - Usage Metering for Charging and Accounting Task 4 - Network Layer Protocols over ATM Participating Companies: Belgacom, Deutsche Telekom, Finnet, Norwegian Telecom, Portugal Telecom (PL), Swiss Telecom, Telecom Finland, Telecom Italia, Telefónica.

AIMS Workshop Heidelberg, 9-11 March TASK 1 NETWORK ARCHITECTURE Objectives Focus on specific ATM network architecture aspects related with a demanding service - Broadband Multimedia Conference. Study of the implementation of the Xcoop interface over ATM connections. Main Results Study of solutions to implement the Broadband Multimedia Conference on a reference network architecture. Establishment of scenarios for Multimedia Conference service interworking in a B-ISDN/N-ISDN environment. Evaluation of the feasibility of PNNI 1.0 routing in a large scale network. Proposal for the implementation of the Xcoop interface over ATM.

AIMS Workshop Heidelberg, 9-11 March TASK 2 CONGESTION CONTROL Objectives Definition of an integrated approach for traffic control in an ATM VC switched network, taking into account the mutual influences among the different functions implemented at the different levels. Main Results Methods for supporting a multiplicity of ATM Layer Transfer Capabilities and QoS classes within the network. Connection routing algorithms. Network dimensioning principles. Methods for evaluating end-to-end performance at cell level. Parameters to characterise call level performance.

AIMS Workshop Heidelberg, 9-11 March TASK 3 USAGE METERING FOR CHARGING AND ACCOUNTING Objectives To identify and evaluate usage metering parameters for charging/accounting in an ATM network. Main Results Identification and specification of usage metering parameters. Identification of the network measurement points for collecting charging and accounting data. Identification of a minimum set of parameters to be transferred between PNO´s for charging/accounting purposes. Establishment of the demands that the implementation of charging/accounting places into the network elements.

AIMS Workshop Heidelberg, 9-11 March TASK 4 NETWORK LAYER PROTOCOLS Objectives To define scenarios and solutions to effectively run multiple network layer protocols over ATM. Main Results Overview of the state-of-the-art solutions, namely MPOA, Tag Switching, Cell Switch Router, ARIS and IP Switching. Comparative evaluation of the distinct solutions. Practical evaluation of the WinSock v2 concept. Migration strategies / Guidelines to PNO’s.