... protect guest privacy.3) Music on holdUnder pick-up condition,press “HOLD” key,telephone keep the line and output music, HOLD music ... the call, and the caller already hung up, or this telephone didn't hung up,the PBX will send busy voice,after 12 ... busy vioce will hang up automatically,then recover normal function,don't impact next incoming ORBITA telephone for hotel telephone system -provide logo ...