external control of a signal controller
If a signal controller has the type Vissig ,you edit the control data in
Opening external control data from the overview
1. On the Network menu, click Signal controllers.
The Signal controllers window opens.
2. Select the desired signal controller.
3. Click the Edit external data button.
A query opens.
4. Confirm the query with Continue.
Opening external control data in the junction editor
1. Open the desired (main) node in the Jjnction editor (Displaying a network object in the Junction editor).
2. In the toolbar of the junction editor, click the 
Edit Vissig controller symbol.
