| 摘要 |
PURPOSE:To enable resolution of the following defects, holding and switching by a handset itself by providing a holding button, and handset call/hands free call switching button to a handle of handset. CONSTITUTION:A switching circuit 3 is designed to switch a handset call, hands free call and holding conditions. A holding button 4 and handset call/hands free call switching button 5 control a circuit 3. At this moment, the button 4 and handset call/hands free call switching button 5 are installed inside the handle of a handset 6, which allows switching the handset call, hands free call and holding conditions at a remote place away from the telephone main device. |
