| 摘要 |
<p>A method for changing the service level for a subscriber in an electronic communication network. One or more voucher records (203, 204, 205; 213, 214) are created for one or more kinds of services, wherein each record comprises a voucher quantity (203b, 204b, 205b; 213b, 214b) of vouchers, and an identification parameter for association with one or more service. The records are associated with a subscriber (201, 211) for usage by the subscriber when said services are utilised.</p> |
