| 摘要 |
A method and system for automatically switching cellular telephone calls, in which a cellular telephone monitors the level of its battery power, and when the battery power level dips below a predetermined threshold, the cellular telephone sends a signal to a mobile switching center, which will automatically transfer the call to an alternate phone to continue the call or leave a message. The same system could be used to transfer the call if the cellular telephone goes out of service, for example by leaving the service area, hitting a "dead zone" of service, or having a technical problem with the equipment, but in these circumstances, the signal for initiating the transfer will originate with the mobile switching center, since the cellular telephone will not be in position to send further instructions. If the cellular telephone user has a replacement battery, the system could be set to first attempt to return the call to the original cellular telephone after a predetermined delay period, so that the call is not lost, and, if unsuccessful, then to a secondary number for either continuation of the call or taking a voice message from the sender if the mobile user is not near the alternate phone. |
