| 摘要 |
The destination zone of a call is defined (2) according to the prior art in a wireless pay phone, for example, by analyzing a selected phone number, and the present invention is characterized in that, additionally, the location of the pay phone is defined (3) and the originating zone of the call is defined based on the location, and the charge rate is set based on at least the originating zone and destination zone of the call. The charge rate is advantageously set by means of a tariffing algorithm realized in the pay phone, which algorithm specifies several charge rate classes and corresponding parameter values, which set (7) a charge rate corresponding to a charge rate class. To set a charge rate class, first a distance class may be set (5) based on the originating zone and destination zone, and then a charge rate class may be set (6) based on the distance class and possibly other factors. The present invention makes it possible to realize a tariffing within a wireless pay phone itself, which functions sufficiently well and fairly even though the pay phone roams extensively, for example, in different countries. |
