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JPS6416141A - Multiplex collecting/delivering device - Google Patents

Multiplex collecting/delivering device

Info

Publication number
JPS6416141A
JPS6416141A JP62171020A JP17102087A JPS6416141A JP S6416141 A JPS6416141 A JP S6416141A JP 62171020 A JP62171020 A JP 62171020A JP 17102087 A JP17102087 A JP 17102087A JP S6416141 A JPS6416141 A JP S6416141A
Authority
JP
Japan
Prior art keywords
modem interface
interface signal
tdm
speed
test circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62171020A
Other languages
Japanese (ja)
Inventor
Fusayoshi Aso
Toru Honda
Akitoshi Yugawa
Fumio Akiyama
Tomoo Motohashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Computer Electronics Co Ltd
Hitachi Microcomputer System Ltd
Hitachi Ltd
Original Assignee
Hitachi Computer Electronics Co Ltd
Hitachi Ltd
Hitachi Microcomputer Engineering Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Computer Electronics Co Ltd, Hitachi Ltd, Hitachi Microcomputer Engineering Ltd filed Critical Hitachi Computer Electronics Co Ltd
Priority to JP62171020A priority Critical patent/JPS6416141A/en
Publication of JPS6416141A publication Critical patent/JPS6416141A/en
Pending legal-status Critical Current

Links

Landscapes

  • Time-Division Multiplex Systems (AREA)
  • Communication Control (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)

Abstract

PURPOSE:To smoothly segment faults at the time of the occurrence of abnormality in transmission between multiplex collecting/delivering devices of MODEM interface information by providing a test circuit with a pseudo MODEM interface signal and switching the MODEM interface signal to the pseudo MODEM interface signal at the time of executing the test. CONSTITUTION:A center TDM (multiplex collecting/delivering device) 3 instructs a low-speed line corresponding part 12 to switch the MODEM interface signal to a CCP 1 to the pseudo MODEM interface signal from a test circuit 15. A high-speed transmission part 13 indicates the address number of a low speed line to be checked and loop indication in the area of test information T of high-speed line data and transmits it to a terminal TDM 6. The low-speed line corresponding part 12 of the TDM 6 is provided with a loop circuit by which the signal from a high-speed reception part 14' is looped-back to a high-speed transmission part 13', and a test circuit 15' transmits Ti turning-on information to the TDM 3 through the high-speed transmission part 13'. The test circuit 16 of the TDM 3 controls turning-on/off of the pseudo MO DEM interface signal to the low-speed line corresponding part 12 by turning-on of a Ti signal and checks coincidence with the MODEM interface signal transmitted from the corresponding part 12 to the test circuit.
JP62171020A 1987-07-10 1987-07-10 Multiplex collecting/delivering device Pending JPS6416141A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62171020A JPS6416141A (en) 1987-07-10 1987-07-10 Multiplex collecting/delivering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62171020A JPS6416141A (en) 1987-07-10 1987-07-10 Multiplex collecting/delivering device

Publications (1)

Publication Number Publication Date
JPS6416141A true JPS6416141A (en) 1989-01-19

Family

ID=15915601

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62171020A Pending JPS6416141A (en) 1987-07-10 1987-07-10 Multiplex collecting/delivering device

Country Status (1)

Country Link
JP (1) JPS6416141A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100917476B1 (en) * 2002-02-15 2009-09-14 가부시키가이샤 라파로오루 Car Body Cover

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100917476B1 (en) * 2002-02-15 2009-09-14 가부시키가이샤 라파로오루 Car Body Cover

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