DE69030777D1 - Netzwerkendgerät - Google Patents

Netzwerkendgerät

Info

Publication number
DE69030777D1
DE69030777D1 DE69030777T DE69030777T DE69030777D1 DE 69030777 D1 DE69030777 D1 DE 69030777D1 DE 69030777 T DE69030777 T DE 69030777T DE 69030777 T DE69030777 T DE 69030777T DE 69030777 D1 DE69030777 D1 DE 69030777D1
Authority
DE
Germany
Prior art keywords
network terminal
network
terminal
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.)
Expired - Fee Related
Application number
DE69030777T
Other languages
English (en)
Other versions
DE69030777T2 (de
Inventor
Kiyomi Kumozaki
Seiichi Yamano
Ryoichi Komiya
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Publication of DE69030777D1 publication Critical patent/DE69030777D1/de
Application granted granted Critical
Publication of DE69030777T2 publication Critical patent/DE69030777T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H04Q11/0435—Details
    • H04Q11/045—Selection or connection testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/24—Arrangements for supervision, monitoring or testing with provision for checking the normal operation
    • H04M3/244—Arrangements for supervision, monitoring or testing with provision for checking the normal operation for multiplex systems
    • H04M3/245—Arrangements for supervision, monitoring or testing with provision for checking the normal operation for multiplex systems for ISDN systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephonic Communication Services (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Telephone Function (AREA)
DE69030777T 1989-03-03 1990-03-02 Netzwerkendgerät Expired - Fee Related DE69030777T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5127389 1989-03-03

Publications (2)

Publication Number Publication Date
DE69030777D1 true DE69030777D1 (de) 1997-07-03
DE69030777T2 DE69030777T2 (de) 1998-01-08

Family

ID=12882340

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69030777T Expired - Fee Related DE69030777T2 (de) 1989-03-03 1990-03-02 Netzwerkendgerät

Country Status (5)

Country Link
US (1) US4984262A (de)
EP (1) EP0385804B1 (de)
KR (1) KR930001814B1 (de)
CA (1) CA2011385C (de)
DE (1) DE69030777T2 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0388445A (ja) * 1989-08-30 1991-04-12 Fujitsu Ltd ループバックの試験起動方式
US5442697A (en) * 1993-11-29 1995-08-15 Adtran Corporation Digital data loopback device
GB9406212D0 (en) * 1994-03-29 1994-05-18 Plessey Telecomm Telecommunication customer interface
US5596568A (en) * 1995-06-02 1997-01-21 Mci Communications Corporation Apparatus for protecting a telecommunications network from false alarm conditions due to T1 line signal interruption
US6343126B1 (en) 1996-03-27 2002-01-29 Hello Direct, Inc. Method and apparatus for interfacing analog telephone apparatus to a digital, analog or hybrid telephone switching system
US5892823A (en) * 1996-03-27 1999-04-06 Hello Direct, Inc. Smart interface technology
US5912964A (en) * 1996-03-27 1999-06-15 Hello Direct, Inc. Adaptive telephone handset interface
US7031454B1 (en) 1997-11-06 2006-04-18 Hello Direct, Inc. Method and apparatus for interfacing telephone apparatus to a digital, analog or hybrid telephone switching system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61264852A (ja) * 1985-05-20 1986-11-22 Fujitsu Ltd ディジタル加入者線試験方式
US4730313A (en) * 1986-08-18 1988-03-08 Racal Data Communications Inc. Access circuit diagnostics for integrated services digital network

Also Published As

Publication number Publication date
EP0385804A3 (de) 1992-04-08
KR930001814B1 (ko) 1993-03-13
CA2011385C (en) 1994-03-29
KR900015497A (ko) 1990-10-27
EP0385804B1 (de) 1997-05-28
US4984262A (en) 1991-01-08
EP0385804A2 (de) 1990-09-05
CA2011385A1 (en) 1990-09-03
DE69030777T2 (de) 1998-01-08

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee