Miscellaneous Features

Antidromes

The notion of an antidrome is used in the path building process of the Telecom subsystem of netWorks. As mentioned in the "Paths" section of Chapter 3, "Telecom Environment," the modeling process makes it possible for you to construct a network model or compound element with links that could not exist in real telecom equipment or networks. For example, consider the Line Unit model depicted in Figure C.2.

Figure C.2: Line Unit Model

This system model contains three simple models - D/A model (white), InterfaceElement model (dark blue), A/D model (beige) - with unidirectional arcs connecting them. If a call comes in through the D/A model and then passes to the InterfaceElement model, you probably do not want it to go out through the A/D model. Most scenarios would have the call pass from the InterfaceElement model to some other model external to the LineUnit model. Antidromes address this problem.

Each simple equipment model keeps a list of its antidromes; an antidrome is defined to be another simple equipment model with which it cannot share a path. For instance, in the LineUnit model in Figure C.2, the D/A model would be an antidrome of the A/D model and vice versa. A simple equipment model may have zero or more antidromes, and an antidrome does not have to be part of the same system model.

All predefined Telecom system models in netWorks already have their antidrome assignments. If, however, you want to change the antidromes of a model, you can do so by selecting Tools/Edit Antidromes... from the pop-up menu on a simple equipment model to display the Edit Antidromes dialog box. (See Figure C.3.)

Figure C.3: Edit Antidromes Controls

The left list box in this dialog box contains the names of the antidromes currently associated with this model, and the right list box names all the simple equipment models in the network model. The

and

buttons provide functions for moving models from one category to another.

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