Flow & Variables
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A flow is a predefined set of destinations that can be used in other Configuration directive. It is like a Macro, allowing to use the same steps of destinations in several place and maintain in a single location. It has been joined with a "Variable", a real asterisk variable holding a value. When the Flow/Variable is assigned to a number, it can be monitored with a BLF. The variable or the state of the assigned extension can be changed using feature codes and used in conditions.
A very clever usage of the Flow and Variable is to create a Night/Day Switch as following
