My daughter is in the military and has just been allocated (and others with her) a "smart" number starting 030  she has told me that wherever she is, she does a swipe with a card which then means the number I dial gets direct to her. This I understand. What neither of us know is what would be the cost to me when dialling this number.

Secondly as my landline is via talktalk, would this smart number be part of the free calls?

and finally, what charges are likely to be involved via my mobile, would they be part of free minutes?

thank you Dave, for being quick and reassuring.