Title:
DATA TRANSFER EQUIPMENT
Document Type and Number:
Japanese Patent JPH0583420
Kind Code:
A
Abstract:
PURPOSE: To execute a communication by using an acoustic coupler by a simple operation.
CONSTITUTION: A dial signal sent to a network control part 12 from a system control part 10 is converted into a DTMF signal for a pushphone by a tone dialer 14 of the network control part 12 and sent to an acoustic coupler 2, the DTMF signal is outputted to a telephone set 3 from a loudspeaker of the acoustic coupler 2, and calling is executed in a state that the acoustic coupler 2 remains installed in a handset of the telephone set 3.
More Like This:
Inventors:
KOSHIISHI TAKAYASU
Application Number:
JP26696891A
Publication Date:
April 02, 1993
Filing Date:
September 19, 1991
Export Citation:
Assignee:
RICOH KK
International Classes:
H04M1/21; H04M1/27; H04M11/00; H04N1/00; (IPC1-7): H04M1/21; H04M1/27; H04M11/00; H04N1/00
Next Patent: DUTY CONTROLLING CIRCUIT