Question: In a multiple leg call scenario, how can the charging information be handled?
Option 1: The charged party is always the terminating party.
Option 2: The charged party is determined by the type of call and cannot be changed during call setup.
Option 3: The charged party is normally the calling party, but it's not possible to change this during call setup.
Option 4: The charging information can indicate that each leg of the call is charged separately, and it's also possible to change the chargeable party at call setup.
Explanation: In a multiple leg call scenario, such as forwarded, conference or roamed calls, the charging architecture should allow for flexible handling of charging information. This includes indicating that each leg of the call is charged separately, and also allowing for changes to the chargeable party during call setup. This flexibility enables support for various business models and user needs, such as the originating party paying for other legs of the call.