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Objectives and Scope. Rick Reed Society Chairman Chairman Study Group 17 Working Party 3 TSE Limited, UK. Role of the SDL Forum Society. Formed 1990 -incorporated 1995 SDL Publicity and info. Dissemination “Owns”: SDL Forum; SAM workshop Primary WWW site on SDL and MSC

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Objectives and scope

Objectives and Scope

Rick Reed

Society Chairman

Chairman Study Group 17 Working Party 3 TSE Limited, UK


Role of the sdl forum society
Role of the SDL Forum Society

  • Formed 1990 -incorporated 1995

  • SDL Publicity and info. Dissemination

  • “Owns”: SDL Forum; SAM workshop

  • Primary WWW site on SDL and MSC

  • Email distribution and ftp

  • Participation in SDL standardization

    Serves members - the SDL community


Sdl msc domain addressed
SDL & MSC: domain addressed

SDL - Specification an Description Language

MSC - Message Sequence Charts

Both graphical (software) engineering notations.

  • Real Time Systems - discrete, reactive

    • Protocols and Services

    • Non telecommunications real time software

  • Formal high quality descriptions produced

    • Better - Quicker - Cheaper

  • Key features MSC: Messages, Instances, Events

  • Key features SDL:

    • Structure, Behaviour, Data, Interfaces, Types

  • Specification to Implementation - broad spectrum

    • Products: procurement, design, interface description

    • Standards - behaviour, conformance models

      ITU-T, ETSI, 3GPP, ECMA,


Use of sdl msc

Specification

Ideas

modelled by

used to

create

Interpreted as

Customer

modelled by

SDL & MSC

Design

Design

Interpreted as

used to

produce

Engineers

transformed

by

Tools

made as

Software

Implementation

C++ etc.

executes

as

Product

Engineers

Use of SDL & MSC


Very simple msc sdl model

SDL Graphics

MSC Graphics

msc convert

system

convert

1(1)

B

t

[s]

This system

and block

define

Structure.

B

s

c_in

c_out

signal s,t;

t

block

B

1(1)

s

t

P

c_in

c_out

rin

rout

This process

defines

Behaviour.

Very simple MSC & SDL model


Forum society and itu t
Forum Society and ITU-T

  • Society

    Members

    All users: telecom + others

    Researchers - Universities etc.

    Tool vendors

    Over 100

    Individuals, SME, large organizations

    Publicity and Conferences

    User feedback

    Contribute to evolutions

  • ITU-T

    Members

    Nation administrations

    Larger telecom organizations

    Publication of Z.1xx standards

    De Jure status!!

    Promotion of standards

  • Joint issues

    Evolution of notations

    Quality of models (in standards +)


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