摘要 |
A method of operating a communication server system is provided. The method includes monitoring communications exchanged between a first communication device and a second communication device for a transmission of data from the first communication device to the second communication device, and in response to detecting the transmission of the data, storing a copy of the data. The method further includes receiving a request for the data from a third communication device, and in response to the request, transmitting the data to the third communication device. The method also includes receiving a download credit from the third communication device in response to transmitting the data to the third communication device, and transmitting the download credit to the first communication device.
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