
In connection with other languages it can be used to support methodologies for system specification, design, simulation, testing, and documentation. Since in MSCs the communication behaviour is presented in a very intuitive and transparent manner, particularly in the graphical representation, the MSC language is easy to The purpose of recommending MSC (Message Sequence Chart) is to provide a trace language for the specification and description of the communication behaviour of system components and their environment by means of message interchange. An alternative deals with two possibles responses: 1 - The timer goes off because the switch did not reply and the phone goes back to the disconnected state.2 - The switch grants the connection and the call is established.Ī message sequence chart (or MSC) is an interaction diagram from the SDL family standardized by the International Telecommunication Union. A connection request is sent to the switch and a timer is started.
