公开(公告)号：JP2000196717A

公开(公告)日：2000-07-14

申请号：JP36358699

申请日：1999-12-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： POSTHUMA CARL R ,  ALBERT J SAWYER

IPC: H01B11/00 ,  H01B11/02 ,  H04B3/50 ,  H04M1/00 ,  H04M1/76

Abstract: PROBLEM TO BE SOLVED: To deal with not only digital subscriber line service(DSL service) but also satisfactory telephone service (POTS) by installing twisted pair loops having non-uniform frequency responses and a means correcting the non-uniform frequency response on a sound communication signal. SOLUTION: One terminal 18 of a loop 12 is connected to a POTS frequency divider 28. The other POTS frequency divider 38 at the other end part 24 of the loop 12 is constituted to be substantially similar to the frequency divider 28 and an associated low pass filter 34. Assembly is executed by removing an existing loading coil from a long distance loop. When it is executed, the loop 12 can support DSL service that can function with the non-uniform frequency response. A step for correcting the non-uniform frequency response on a sound communication signal is executed and satisfactory POTS sound communication by the same loop is realized.