WIRELESS KEYPHONE SYSTEM APPLYING A WIRELESS TELEPHONE AND AN INTERFACING METHOD WITH A HANDSET USING THE KEYPHONE SYSTEM, AND AN SMS PERSONAL MAIL PROCESSING METHOD, PARTICULARLY CONCERNED WITH EXPANDING A LINE BY REALIZING A LOCAL LINE INCREASING INTERFACE, WHILE SUPPORTING A MULTI-HANDSET

摘要

PURPOSE: A wireless keyphone system applying a wireless telephone and an interfacing method with a handset using the keyphone system, and an SMS personal mail processing method are provided to enable a call/message processing service between an internal subscriber and a local subscriber by transceiving a wireless signal with a handset registered in the system while increasing a local telephone line. CONSTITUTION: A rectifying circuit(10) rectifies an AC signal into a DC signal, or a DC signal into an AC signal. A line interface(20) is electrically connected to the rectifying circuit(10), and amplifies a detailed signal. Plural CODECs(30) convert an audio analog signal incoming outside through the line interface(20) into a digital signal, or convert an audio digital signal outgoing outside into an analog signal. A controller(40) processes transmitting/receiving wireless signals including the audio signal through a transmitting/receiving wireless module(60) between the CODECs(30) and a handset.