公开(公告)号：EP0112716A3

公开(公告)日：1987-06-24

申请号：EP83307793

申请日：1983-12-21

申请人： GENERAL DATACOMM INDUSTRIES, INC.

发明人： Goldberg, Hugh Michael ,  Dombrowski, Lawrence Charles

IPC分类号： H04L05/20 ,  H04L01/24

CPC分类号： H04L5/20 ,  H04B17/0087 ,  H04L1/24

摘要： A secondary data channel is described for use in a four-wire communication system in which there is continuous wire between each of two coupling transformers at a first station and each of two coupling transformers at a second station. In accordance with the invention, the transformer windings at each station that are connected to the transmission line wires are equipped with center taps G that are connected to a secondary channel data set. By these means a secondary data signal can be transmitted from one station to another by applying a signal to the center taps of the two coupling transformers at one station and receiving such signals from the center taps of the two coupling transformers at the other station.

摘要翻译： 描述了用于四线通信系统中的辅助数据信道，其中在第一站处的两个耦合变压器中的每一个和第二站处的两个耦合变压器中的每一个之间存在连续导线。 根据本发明，连接到传输线路的每个站处的变压器绕组配备有连接到次级通道数据组的中心抽头G。 通过这些意思，可以通过将信号施加到一个站处的两个耦合变压器的中心抽头并从另一个站处的两个耦合变压器的中心抽头接收这样的信号，从而将一个辅助数据信号发送到另一个站。