公开(公告)号：US5550917A

公开(公告)日：1996-08-27

申请号：US546901

申请日：1995-10-23

Applicant: Ronan Tallec

Inventor： Ronan Tallec

IPC: H04M17/02 ,  H04M19/08 ,  H04M1/00

CPC classification number: H04M19/08 ,  H04M17/023

Abstract: An interface device between a public telephone (9) and an external terminal (14), the public telephone (9) having a control circuit (10) connected to a telephone line (20) and the interface device having a connector (15) accessible to the user. A switching circuit (22) makes it possible to switch the line (20) either to the control circuit of the public telephone (10), or to a connector control circuit. An information circuit of a connection of the external terminal is in the connector, a first electrical insulation module (21) is located between a connector control circuit and the switching circuit (22), a second electrical insulation module (19) is between a connector control circuit and the control circuit of the public telephone (9) and a control circuit of the connector (16).

Abstract translation: 公共电话（9）和外部终端（14）之间的接口装置，所述公共电话（9）具有连接到电话线（20）的控制电路（10）和具有连接器（15）的接口装置 给用户 切换电路（22）可以将线路（20）切换到公用电话机（10）的控制电路或连接器控制电路。 外部端子的连接的信息电路在连接器中，第一电绝缘模块（21）位于连接器控制电路和开关电路（22）之间，第二电绝缘模块（19）位于连接器 控制电路和公用电话机（9）的控制电路以及连接器（16）的控制电路。