| 摘要 |
A method of providing services in a communication system. The method comprises: establishing a call instance from a caller terminal to a service provider terminal in the communication system; transmitting from the service provider terminal a service proposal in the form of an electronic document via the established call instance to the caller terminal; selectively accepting or rejecting the service proposal at the caller terminal; and in the case of acceptance of the service proposal, transmitting a request for money to a backend server in the communication system from the caller terminal; transmitting electronic cash tokens from the backend server to the caller terminal in response to the request to receive money; forwarding the electronic cash tokens from the caller terminal to the service provider terminal, whereafter the service provider provides services in accordance with the service proposal.
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