| 摘要 |
<p>A communication system for an organization having multiple sites uses a dual-mode device capable of both cell phone communication and telephone communication on a local area network (LAN) (27). IP LANS (38, 39) are established at organization sites such that a temporary IP address is assigned to a dual-mode device (9) that logs onto an organization LAN (39), and the IP address is associated at a PSTN-connected server on the LAN (39) with the cell phone number of the communication device. The IP server (35) notifies a PSTN-connected routing server when a device logs on to a LAN (39), and also provides a destination number for the IP server. Cell calls directed to the device are then redirected to the IP server (35) and directed to the device connected to the LAN.</p> |
