公开(公告)号：SE7514222A

公开(公告)日：1976-06-17

申请号：SE7514222

申请日：1975-12-16

Applicant: NORTHERN TELECOM INC

Inventor： OSBORNE D C ,  HARRISON J M ,  HILLMAN A K

IPC: G01D5/12 ,  H04M3/32 ,  H04M3/26

CPC classification number: H04M3/32

公开(公告)号：SE7514222L

公开(公告)日：1976-06-17

申请号：SE7514222

申请日：1975-12-16

Applicant: NORTHERN TELECOM INC

Inventor： OSBORNE D C ,  HARRISON J M ,  HILLMAN A K

IPC: H04M3/32 ,  G01D5/12 ,  H04M3/26

Abstract: Improvements in apparatus for measuring characteristics of a communications channel, characterized in that a programmable local unit is arranged in one of two terminals between which the measurement is made, to exchange analog test signals with the communication channel; a central digital computer device for exchanging digital information signals with the programmable local unit, and a first communication link between the control device and the local unit for retransmitting said digital information signals. (Machine-translation by Google Translate, not legally binding)