This is a read-only text field, up to 64 characters, reporting the actual session target being used for this active call leg, populated from the associated peer's configured session-target value at the moment the call connected. An admin checks this to confirm exactly which configured session target was used for a specific live call, useful when a peer has multiple potential targets or the configuration has changed recently. For example, an admin verifying that a recent session-target configuration change took effect would check this object on new active calls to confirm the updated target is actually being used.