| 摘要 |
When a call connection request is transmitted from MS 1 a link is established by PPP processing part 242 and billing control system 245 makes communication timer 244 start counting communication time. If communication conditions over the wireless section deteriorate and/or if there is no transmission/reception of data frames, billing control system 245 makes communication timer 244 halt counting of communication time. Further, if transmission/reception of data resumes, a connection over the wireless section is re-established by BSC 23 and billing control system 245 makes communication timer 244 recover counting of communication time. Finally, if data communication with server 4 is closed, billing control system 245 makes communication timer 244 stop counting communication time. |
