The receiver converts the radio telephone when there is incoming call signal-out only.When using a mobile phone, the phone will send a signal to the nearest transmitter station through the waves, wave 1 set. When the signal sent to it will be converted to a Lama network dial-up connection or primary signal radio waves, then the signal will be sent to your phone call to find the nearest station, through. The signal output or input of a handset with a different frequency. The shopping centres it is not interfering with each other.
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