Call logs include the date when you have called, the telephone number to which you called and the duration of the conversation. You can also add notes to the call log. You can review call logs by the telephone.
Rates of the call shop are usually defined by the administrator, but the rate plans are managed in the main database of the billing system. All the rates are dependent on the charging policy; in case of a destination based billing rates are specified according to the area codes in the supported destinations.