公开(公告)号：WO1994016347A1

公开(公告)日：1994-07-21

申请号：PCT/US1993012684

申请日：1993-12-30

Applicant: GTE LABORATORIES INCORPORATED

Inventor： GTE LABORATORIES INCORPORATED ,  EICHEN, Elliot ,  CHIRRAVURI, Jagannath

IPC: G02B06/28

CPC classification number: H04B10/071

Abstract: A novel system for performing optical time domain reflectometry (OTDR) measurement on a plurality of optical fibers (105, 106, 107, 108, 109), using only the transmitters and receivers of the system data. The system uses optical line cards (120, 121, 122, 123, 124), which are normally used for transmission of system data, to perform fault detection. Detection of a fault in an optical fiber causes the line card associated with the fiber to stop transmission of system data and alert signal processor (140) to initiate OTDR testing. The signal processor is coupled to each of the line cards through an electronic 1XN switch (130) so that each fiber can be tested individually.

Abstract translation: 一种用于仅使用系统数据的发射机和接收机对多个光纤（105,106,107,108,109）进行光时域反射测量（OTDR）测量的新型系统。 系统使用通常用于传输系统数据的光线路卡（120,121,122,123,124）进行故障检测。 检测光纤中的故障导致与光纤相关联的线路卡停止系统数据和警报信号处理器（140）的传输以启动OTDR测试。 信号处理器通过电子1XN开关（130）耦合到每个线路卡，使得可以单独测试每个光纤。

公开(公告)号：EP1093609A1

公开(公告)日：2001-04-25

申请号：EP99924354.6

申请日：1999-05-19

Applicant: GTE LABORATORIES INCORPORATED

Inventor： EICHEN, Elliot ,  BROOKS, David, L.

IPC: G06F9/00 ,  H04B3/23 ,  H04B3/32

CPC classification number: H04M3/306 ,  G06Q10/06 ,  H04B3/46 ,  H04M3/2209 ,  H04M3/2227

Abstract: A system and methodology for qualifying a twisted pair copper loop for digital subscriber loop services are described. The system automatically queries telecommunications provider database records and/or requests measurements from network switching equipment or testing systems to obtain data regarding the twisted pair copper loop, such as loop length, electrical characteristics, and other loop topology characteristics such as wire gauge, the presence of load coils (88, 90), and the presence of bridge taps (84, 86). The system determines which digital subscriber loop services are available for the copper loop based on the combination of all data obtained. The system may be implemented in part as an expert system with a knowledge base of qualification rules used in the decision-making process.