公开(公告)号：US3873774A

公开(公告)日：1975-03-25

申请号：US37391273

申请日：1973-06-27

Applicant: CIT ALCATEL

Inventor： CABET ALAIN ,  PINIER GASTON ,  ELOY GUY

IPC: H04J1/14 ,  H04L5/06 ,  H04J1/16

CPC classification number: H04L5/06 ,  H04J1/14

Abstract: Equipment for detecting, on the basis of two consecutive tests, the existence of one or several telegraph channels on one or several telephone channels of a frequency multiplex system. The first test, which is relatively fast, is based on the presence of a predetermined frequency in the channel. The second test, which is slower in operation, is based on the amplitude identity of two moments, formed by alternate transitions in the transmission signal.

Abstract translation: 用于在两个连续测试的基础上检测频率复用系统的一个或几个电话信道上存在一个或几个电报信道的设备。 相对较快的第一个测试是基于通道中预定频率的存在。 运行较慢的第二个测试是基于通过传输信号中的交替转换形成的两个力矩的幅度同一性。

公开(公告)号：FR2301144A1

公开(公告)日：1976-09-10

申请号：FR7504877

申请日：1975-02-17

Applicant: CIT ALCATEL

Inventor： ELOY GUY ,  SEMUR PIERRE ,  PINIER GASTON

IPC: H04Q3/00

Abstract: The interconnection means are used to connect n input data transmission paths with n output data transmission paths, each of the output paths being able to be connected to one of several possible input paths. Each of n input selectors have one input and several outputs and are connected respectively to the input paths, while n output selectors each have several inputs and one output and are respectively connected to the output paths. A point of connection between one input path and one output path is provided by a cable section directly connecting one output of the associated input selector and one input of the output selector associated with the output path.

公开(公告)号：DE2331902A1

公开(公告)日：1974-01-17

申请号：DE2331902

申请日：1973-06-22

Applicant: CIT ALCATEL

Inventor： CABET ALAIN ,  PINIER GASTON ,  ELOY GUY

IPC: H04J1/14 ,  H04L5/06 ,  H04M11/06