High Quality Content by WIKIPEDIA articles! A telephone operator is either: a person who provides assistance to a telephone caller, usually in the placing of operator assisted telephone calls such as calls from a pay phone, collect calls (called reversed-charge calls in the UK), calls which are billed to a credit card, station-to-station and person-to-person calls, and certain international calls which cannot be dialed directly. a telephone company offering telephone services to subscribers. For example, users of a mobile phone will register with a mobile phone operator to receive GSM services.