A pre-defined Scenario that another Scenario can reference. It will normally describe most (if not all) of what the Soft Switch needs to do to process a call. What makes it usable as a “base” is that it uses variables and not specific values for things like Call Priority and Call Queue IDs. (Specific values for such parameters are provided in a Scenario that references the Base Scenario.) When you purchase the Soft Switch from Startel, it comes with a set of pre-defined Base Scenarios that are designed specifically to meet current customer needs. Using these as a starting point, you can typically define Scenarios that require very little additional programming