... -Auto released line -CE,RHOS ORBITA telephone for hotel telephone system -provide logo printing Main features:1.10 Guest Service Button ... Speaker condition, press “ * ” for 4 seconds,and listen “ beep ” cont voice ), then input digit (0-9),then press memory key (M1 ... telephone didn't hung up,the PBX will send busy voice,after 12 times busy vioce will hang up automatically,then ...