OPENSIG Spring ’97, April 1997 Cambridge, UK Service Execution Environment for Digital Multimedia Helsinki University of Technology / TCM Lab Service Execution Environment for Digital Multimedia OPENSIG Spring ’97 Juhana Räsänen Helsinki University of Technology Laboratory of Telecommunications Software and Multimedia

OPENSIG Spring ’97, April 1997 Cambridge, UK Service Execution Environment for Digital Multimedia Helsinki University of Technology / TCM Lab Background Research team lead by prof. Olli Martikainen ATM studied in TOVE project –A prototype of an ITU-T compliant (Q.2931) ATM switch controller completed during 1996 –Development continues on NNI and IN –OO-methods in telecommunications software –Working knowledge of ATM So what: what is ATM used for?

OPENSIG Spring ’97, April 1997 Cambridge, UK Service Execution Environment for Digital Multimedia Helsinki University of Technology / TCM Lab B-ISDN scenario Backbone network STB ? Access networkDomestic customer

OPENSIG Spring ’97, April 1997 Cambridge, UK Service Execution Environment for Digital Multimedia Helsinki University of Technology / TCM Lab Broadband access network Integration of the Internet-like services and stream-based services Open platform for easy service introduction Lightweight signalling: 100’s of users / switch Should utilize existing telephone wires –ATM over xDSL? Separation of switching and control

OPENSIG Spring ’97, April 1997 Cambridge, UK Service Execution Environment for Digital Multimedia Helsinki University of Technology / TCM Lab Standard ATM / B-ISDN? Several traffic classes and QoS: good support and performance for stream data transport Opening of the streams: Heavyweight signalling! Service concept unclear due to the standardisation lagging behind Troublesome IP support SAAL Q.2931 MTP-3 BISUP Call Control SCCP TCAP BINAP SCP SDP SSP

OPENSIG Spring ’97, April 1997 Cambridge, UK Service Execution Environment for Digital Multimedia Helsinki University of Technology / TCM Lab IP switching? Good support for IP traffic, but no guaranteed streams Everything must be IP Service concept? –Authentication –Billing & tariffing –User profile, service portfolio Flow analysis IP routing

OPENSIG Spring ’97, April 1997 Cambridge, UK Service Execution Environment for Digital Multimedia Helsinki University of Technology / TCM Lab Layered control model SCL FCL NCL SCL FCL NCL User STB Service client NCL Service agent Fabric control 2 Connection control 3 Service control NCL Service 2 3

OPENSIG Spring ’97, April 1997 Cambridge, UK Service Execution Environment for Digital Multimedia Helsinki University of Technology / TCM Lab Calypso architecture Based on the layered control model Service-oriented: aim is to create an environment in which service creation and deployment is as easy and flexible as possible Services are managed by Service Agents (SA) that are able to control the network directly A Service Execution Environment is needed

OPENSIG Spring ’97, April 1997 Cambridge, UK Service Execution Environment for Digital Multimedia Helsinki University of Technology / TCM Lab Service Execution Environment A standard environment for SA development –Class framework –Runtime environment –Helper services (authentication, billing, etc.) The interface between the network operator and service providers Also management functions can be integrated

OPENSIG Spring ’97, April 1997 Cambridge, UK Service Execution Environment for Digital Multimedia Helsinki University of Technology / TCM Lab Calypso bits and pieces Service Execution Point –A Linux workstation Service Execution Environment –Implementation in Java because of mobile code and IP support Network Control Layer –Linux IP stack + path reservation protocol based on RSVP Fabric Control Layer –VE (Virtual Exchange) of TOVE SI User 1 Terminal SI User 2 Terminal Service SEE IP protocols SA TOVE VE SEP SI SA

OPENSIG Spring ’97, April 1997 Cambridge, UK Service Execution Environment for Digital Multimedia Helsinki University of Technology / TCM Lab Future work The goal is to have a simple demo running in the end of 1997 Further application and service experimenting in MediaPoli project