Patent ID: 8050672

Claim:
A telecommunication system comprising: a mobile phone, connected to a wireless network; and a wired phone, connected to a wired network; wherein the mobile phone comprises: a receiver, for receiving voice signals of a called party, wherein the voice signals are from the wireless network or transmitted by the wired phone from the wired network; a first communicating unit configured for communicating with the wired phone within a predetermined coverage area, receiving the voice signals from the called party of the wired network via the wired phone at real time, and sending voice signals from a user of the mobile phone to the called party of the wired network via the wired phone at real time; and a central processing unit (CPU), for controlling the first communicating unit to send a search signal in response to a phone number input operation, judging whether the first communicating unit receives a response signal from the wired phone within a predetermined time period, making a call via the wireless network if the first communicating unit doesn't receive the response signal or the first communicating unit receives the response signal and a value of the response signal is a first value, controlling the first communicating unit to send the phone number signal to the wired phone, if the first communicating unit receives the response signal and the value of the response signal is a second value, processing the voice signals from the called party of the wired network via the wired phone to the receiver, and processing the voice signals from the user to the called party of the wired network via the wired phone; and the wired phone comprises: a second communicating unit configured for communicating with the first communicating unit within the predetermined coverage area, sending the voice signals from the called party of the wired network to the first communicating unit at real time, and receiving the voice signals from the user of the mobile phone via the first communicating unit to the wired network at real time; and a processing unit, for acquiring the current state of the wired phone and controlling the second communicating unit to send the response signal to the mobile phone in response to the search signal from the mobile phone, and outgoing the call via the wired network if the current state of the wired phone is idle.