JPH0221852U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram of an embodiment of the present invention, FIG. 2 is a block circuit diagram of the same essential parts, and FIG. 3 is a schematic block diagram of a conventional example. 1, _{2 1} to 2n are telephones, 3 is a private branch exchange, 4 is a telephone line, 5a, 5b is an electric lock unit,
6a and 6b are entrance doors.

Claims (1)

[Scope of utility model registration request] A private telephone exchange is equipped with a conversion table for converting a dwelling unit number dialed from a telephone at the common entrance of the apartment complex to the telephone number of the corresponding dwelling unit's telephone, and a means for calling the telephone of each dwelling unit,
In a visitor reception system for apartment complexes in which calls are made between the telephone at the common entrance and the telephones in each dwelling unit via telephone lines, a control code consisting of a dial signal transmitted from the telephone in each dwelling unit during a call is transmitted. A visitor reception system for an apartment complex, characterized by being equipped with an electric lock control unit that receives reception and unlocks the electric lock of the entrance door of a common entrance.