| 摘要 |
PURPOSE: A call switching method in a wireless/wired composite intercommunicating system is provided to easily switch a call only with an extension number between a local user and a radio subscriber by switching a call being in a communication state with the local terminal to a radio terminal without passing a public network. CONSTITUTION: When a terminal desires a call switching while a local wireless terminal(B) is being in a call communication with a terminal(A), a wired/wireless composite intercommunicating system determines whether a call switching request message has been received(201). If the system receives the call switching request message, the system transmits a hold message to the terminal(A) to hold the call(202). The system generates a holding sound to the terminal(A) and generates a switching sound to the local wireless terminal(B)(203). The system checks receipt of information of digits of local/office line number(204). If the system has received the information of digits of local/office line number and if the received number is a registered local number, the system determines whether the local number is a local number of a wired terminal or a local number of a wireless terminal(207). If the local number is the local number of the wireless terminal, the system checks the number of the wired terminal corresponding to the local number(208). If the local number is the local number of the wired terminal, the system transmits a scissors message to a terminal(C) corresponding to the local/call number so that a ring signal is sounded in the terminal(C) and transmits a ring back tone to the local wireless terminal(B). Whenever the ring signal of the terminal(C) is sounded, the system checks a hook-off state of the terminal(C). |
