GB1520232A - System for checking the quality of a digital connection made by a telephone circuit - Google Patents

System for checking the quality of a digital connection made by a telephone circuit

Info

Publication number
GB1520232A
GB1520232A GB7251/77A GB725177A GB1520232A GB 1520232 A GB1520232 A GB 1520232A GB 7251/77 A GB7251/77 A GB 7251/77A GB 725177 A GB725177 A GB 725177A GB 1520232 A GB1520232 A GB 1520232A
Authority
GB
United Kingdom
Prior art keywords
quality
link
displayed
characters
received
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
Application number
GB7251/77A
Other languages
English (en)
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.)
Lignes Telegraphiques et Telephoniques LTT SA
Original Assignee
Lignes Telegraphiques et Telephoniques LTT SA
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 Lignes Telegraphiques et Telephoniques LTT SA filed Critical Lignes Telegraphiques et Telephoniques LTT SA
Publication of GB1520232A publication Critical patent/GB1520232A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
GB7251/77A 1976-02-27 1977-02-21 System for checking the quality of a digital connection made by a telephone circuit Expired GB1520232A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7605615A FR2342599A1 (fr) 1976-02-27 1976-02-27 Procede de controle de la qualite d'une liaison numerique et equipement de mise en oeuvre

Publications (1)

Publication Number Publication Date
GB1520232A true GB1520232A (en) 1978-08-02

Family

ID=9169732

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7251/77A Expired GB1520232A (en) 1976-02-27 1977-02-21 System for checking the quality of a digital connection made by a telephone circuit

Country Status (4)

Country Link
US (1) US4093940A (enExample)
FR (1) FR2342599A1 (enExample)
GB (1) GB1520232A (enExample)
SE (1) SE7702164L (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2440664A1 (fr) * 1978-10-31 1980-05-30 Thomson Csf Dispositif de mesure de la qualite d'une liaison numerique et equipements de transmission comportant un tel dispositif
DE2852805A1 (de) * 1978-12-06 1980-06-12 Siemens Ag Verfahren und schaltungsanordnung zur messung der uebertragungseigenschaften eines messobjektes
EP0014583A1 (en) * 1979-02-13 1980-08-20 Macwell Systems Limited Improvements in or relating to fault-finding apparatuses
US4592044A (en) * 1984-05-22 1986-05-27 At&T Information Systems Inc. Apparatus and method for checking time slot integrity of a switching system
US5289178A (en) * 1989-10-10 1994-02-22 Motorola, Inc. Sensitivity indicator for a radio receiver and method therefor
US5485476A (en) * 1993-06-14 1996-01-16 International Business Machines Corporation Method and system for error tolerant synchronization character detection in a data storage system
CA2118277C (en) * 1993-12-23 1998-09-22 Alexander Feiner Facility type determination technique

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3315228A (en) * 1963-08-19 1967-04-18 Futerfas Jack System for digital communication error measurements including shift registers with identical feedback connections
US3496536A (en) * 1966-05-02 1970-02-17 Xerox Corp Data link test apparatus
US3491338A (en) * 1967-04-17 1970-01-20 Us Air Force System for synchronizing a receiver and transmitter at opposite ends of a transmission path and for evaluating the noise level thereof
US3596245A (en) * 1969-05-21 1971-07-27 Hewlett Packard Ltd Data link test method and apparatus
US3760354A (en) * 1971-07-23 1973-09-18 Data Control Systems Inc Error rate detection system
US3914740A (en) 1973-09-04 1975-10-21 Northern Electric Co Error detector for pseudo-random sequence of digits
US3904861A (en) * 1974-03-13 1975-09-09 Digital Equipment Corp Printed circuit board testing unit
US4022988A (en) * 1976-06-14 1977-05-10 Bell Telephone Laboratories, Incorporated Fault locating apparatus for digital transmission system

Also Published As

Publication number Publication date
FR2342599B1 (enExample) 1980-04-04
FR2342599A1 (fr) 1977-09-23
SE7702164L (sv) 1977-08-28
US4093940A (en) 1978-06-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee