It then create a Conversation object (c), to which it delegates the rest of the work. The Switch object then calls itself with the message routeCall.

Once the digits are dialled, a finished dialing message is sent to the switch object containing the dialled digits. In turn, the Switch calls setDial Tone on the Caller, and the Caller iterates (7 times) on the message dialDigit to itself. The sequence begins with one Caller (s) sending a message (lift Receiver) to the Switch object. Let us assume that there are four objects involved: two Callers (s and r), an unnamed telephone Switch, and Conversation (c) between the two parties. NOTE: ArgoUML does not fully support Sequence Diagrams, it may be better to use a different program (such as OpenOffice Draw/ Microsoft Powerpoint) or (neatly) draw the diagram by hand.

(25%) Draw a UML sequence diagram that specifies the following protocol of initiating a two-party phone call. When drawing generalization or realization hierarchies on a diagram always make sure the parent elements are higher than the child elements so the arrows always point upwards.Transcribed image text.When drawing connectors, having lines with multiple connectors make diagrams look messy and confusing. Try to make sure all lines go horizontally or vertically and create right angles with each other.

If two lines must cross, use a “bridge” to show that the lines do not intersect. This allows your diagrams to be more readable and understandable. Avoid lines crossing over each other while creating UML diagrams.When creating UML diagrams with Creately’s UML diagram tool you can create multiple diagrams on different workspaces and link them together for better comprehension. Creating unnecessarily complex diagrams with too much information can confuse stakeholders. When creating UML diagrams it is important to remember to create levels of abstractions that meet the need of your audience.Things to Remember While Creating UML diagrams UML diagrams visually represent a system along with its main actors, roles, actions, artifacts or classes, in order to better understand, alter, maintain, or document information about the system. UML or Unified Modeling Language is a modeling technique used to document software.

Uml diagrams in openoffice draw