초록 ▼

Users can make landline, wireless and/or internet calls from a conventional landline communication device. If the communication device is on a wireless call, that call may be placed on hold to answer an incoming call on the landline. Likewise, if the communication device is on a landline call, that

Users can make landline, wireless and/or internet calls from a conventional landline communication device. If the communication device is on a wireless call, that call may be placed on hold to answer an incoming call on the landline. Likewise, if the communication device is on a landline call, that call may be placed on hold to answer an incoming call on the wireless telephone. Wireless and landline calls may also be conferenced together.

대표청구항 ▼

I claim: 1. A communication system comprising: a landline communication device comprising circuitry adapted to place and receive calls over a landline communication network; and interface circuitry connected to a single ring-tip line pair of a landline communication network and to a wireless commun

I claim: 1. A communication system comprising: a landline communication device comprising circuitry adapted to place and receive calls over a landline communication network; and interface circuitry connected to a single ring-tip line pair of a landline communication network and to a wireless communication device for a wireless communication network, wherein the interface circuitry selectively connects the landline communication device to the ring-tip line pair so that calls are placed and received by the landline communication device over the landline communication network and to the wireless communication device so that calls are placed and received by the landline communication device over the wireless communication network via the wireless communication device, wherein the interface circuitry detects if the ring-tip line pair is in use and, if so, automatically places calls from the landline communication device using the wireless communication device. 2. A communication system comprising: a landline communication device comprising circuitry adapted to place and receive calls over a landline communication network; and interface circuitry connected to a single ring-tip line pair of a landline communication network and to a wireless communication device for a wireless communication network, wherein the interface circuitry selectively connects the landline communication device to the ring-tip line pair so that calls are placed and received by the landline communication device over the landline communication network and to the wireless communication device so that calls are placed and received by the landline communication device over the wireless communication network via the wireless communication device, wherein the interface circuitry comprises signal-boosting circuitry for boosting a signal of the wireless communication device. 3. A communication system comprising: a landline communication device comprising circuitry adapted to place and receive calls over a landline communication network; and interface circuitry connected to a single ring-tip line pair of a landline communication network and to a wireless communication device for a wireless communication network, wherein the interface circuitry selectively connects the landline communication device to the ring-tip line pair so that calls are placed and received by the landline communication device over the landline communication network and to the wireless communication device so that calls are placed and received by the landline communication device over the wireless communication network via the wireless communication device, wherein the interface circuitry comprises: a first switch connected between the landline communication device and the ring-tip line pair; a second switch connected between the landline communication device and the wireless communication device; and a processing circuit for controlling the first and second switches. 4. A communication system comprising: a landline communication device comprising circuitry adapted to place and receive calls over a landline communication network; and interface circuitry connected to a single ring-tip line pair of a landline communication network and to a wireless communication device for a wireless communication network, wherein the interface circuitry selectively connects the landline communication device to the ring-tip line pair so that calls are placed and received by the landline communication device over the landline communication network and to the wireless communication device so that calls are placed and received by the landline communication device over the wireless communication network via the wireless communication device, wherein the interface circuitry determines whether to place a landline or wireless call in response to a user input. 5. The communication system according to claim 4, wherein the landline communication device comprises a cordless telephone. 6. The communication system according to claim 4, wherein the interface circuitry permits other landline communication devices to use the ring-tip line pair if the landline communication device is used to place or receive a wireless call. 7. The communication system according to claim 4, wherein the wireless communication network comprises a cellular network. 8. The communication system according to claim 4, wherein the landline communication network comprises the public switched telephone network. 9. The communication system according to claim 4, wherein the landline communication device comprises a landline telephone. 10. The communication system according to claim 4, wherein the wireless communication device comprises a cellular telephone. 11. The communication system according to claim 4, wherein the wireless communication device comprises a personal digital assistant (PDA). 12. The communication system according to claim 3, wherein the processing circuit controls the first and second switches so as to conference together a landline call and a wireless call. 13. The communication system according to claim 3, wherein the processing circuit controls the first and second switches so as to place one of a landline call and a wireless call involving the landline communication device on hold and to connect the landline communication device to the other of a landline call and a wireless call. 14. The communication system according to claim 1, wherein the interface circuitry comprises a switching arrangement and a processing circuit for controlling the switching arrangement so as to selectively conference together a landline call and a wireless call. 15. The communication system according to claim 1, wherein the interface circuitry comprises a switching arrangement and a processing circuit for controlling the switching arrangement so as to selectively place one of a landline call and a wireless call involving the landline communication device on hold and to connect the landline communication device to the other of a landline call and a wireless call. 16. The communication system according to claim 1, wherein the landline communication device comprises a cordless telephone. 17. The communication system according to claim 2, wherein the interface circuitry comprises a switching arrangement and a processing circuit for controlling the switching arrangement so as to selectively conference together a landline call and a wireless call. 18. The communication system according to claim 2, wherein the interface circuitry comprises a switching arrangement and a processing circuit for controlling the switching arrangement so as to selectively place one of a landline call and a wireless call involving the landline communication device on hold and to connect the landline communication device to the other of a landline call and a wireless call. 19. The communication system according to claim 2, wherein the interface circuitry detects if the ring-tip line pair is in use and, if so, automatically places calls from the landline communication device using the wireless communication device. 20. The communication system according to claim 2, wherein the landline communication device comprises a cordless telephone. 21. The communication system according to claim 4, wherein the interface circuitry comprises a switching arrangement and a processing circuit for controlling the switching arrangement so as to selectively conference together a landline call and a wireless call. 22. The communication system according to claim 4, wherein the interface circuitry comprises a switching arrangement and a processing circuit for controlling the switching arrangement so as to selectively place one of a landline call and a wireless call involving the landline communication device on hold and to connect the landline communication device to the other of a landline call and a wireless call. 23. The communication system according to claim 4, wherein the interface circuitry detects if the ring-tip line pair is in use and, if so, automatically places calls from the landline communication device using the wireless communication device.