Supervisory communication system serving callers with restricted freedom

摘要

A supervisory communication system serving callers with restricted freedom, connected to a local telephone exchange and to a local computer network comprising a data base storing relevant data concerning each possible caller. The system comprises a plurality of call units (11) arranged to be accessible for the callers and each having a handset (12) for carrying out calls, a personal identification means for identifying any caller; and a camera (13) enabling observation of the callers. A switching unit (19) is coupled to each of the call units (11), and a communication server (40) having a memory (50) is connected to the switching unit (19). Supervising terminals (41) are arranged at appropriate locations and served by supervisory personnel, each of whom has a display screen (42) with multiple fields (43 to 45), a loudspeaker (46), a microphone (48) and a keyboard (47). The communication server (40) is connected to a local network for selectively receiving information from the data base concerning the callers when starting to use the system and transmitting information concerning data associated with each call. The communication server (40) is connected through the switching unit (19) to the call units (11) at the beginning of each call, and the call units (11) are activated by the caller when identifying himself. The communication server (40) then provides connection towards a free supervising terminal (41), receives and checks the telephone number dialed by the caller, dials the number and connects the caller with the called person.