GB2158326B - Testing arrangements of a digital switching systems - Google Patents

Testing arrangements of a digital switching systems

Info

Publication number
GB2158326B
GB2158326B GB8410676A GB8410676A GB2158326B GB 2158326 B GB2158326 B GB 2158326B GB 8410676 A GB8410676 A GB 8410676A GB 8410676 A GB8410676 A GB 8410676A GB 2158326 B GB2158326 B GB 2158326B
Authority
GB
United Kingdom
Prior art keywords
switching systems
digital switching
testing arrangements
arrangements
testing
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
GB8410676A
Other versions
GB8410676D0 (en
GB2158326A (en
Inventor
James Andrew Murray
Douglas Edwin Woodman
Anthony Robert Hills
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB8410676A priority Critical patent/GB2158326B/en
Publication of GB8410676D0 publication Critical patent/GB8410676D0/en
Publication of GB2158326A publication Critical patent/GB2158326A/en
Application granted granted Critical
Publication of GB2158326B publication Critical patent/GB2158326B/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
    • H04L1/242—Testing correct operation by comparing a transmitted test signal with a locally generated replica
    • H04L1/243—Testing correct operation by comparing a transmitted test signal with a locally generated replica at the transmitter, using a loop-back
    • 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
    • H04L1/241—Testing correct operation using pseudo-errors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • H04M3/302—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs
    • H04M3/303—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs and using PCM multiplexers, e.g. pair gain systems
    • 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
GB8410676A 1984-04-26 1984-04-26 Testing arrangements of a digital switching systems Expired GB2158326B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8410676A GB2158326B (en) 1984-04-26 1984-04-26 Testing arrangements of a digital switching systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8410676A GB2158326B (en) 1984-04-26 1984-04-26 Testing arrangements of a digital switching systems

Publications (3)

Publication Number Publication Date
GB8410676D0 GB8410676D0 (en) 1984-05-31
GB2158326A GB2158326A (en) 1985-11-06
GB2158326B true GB2158326B (en) 1987-08-26

Family

ID=10560119

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8410676A Expired GB2158326B (en) 1984-04-26 1984-04-26 Testing arrangements of a digital switching systems

Country Status (1)

Country Link
GB (1) GB2158326B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2025645C (en) * 1989-09-19 1999-01-19 Keiji Fukuda Control channel terminating interface and its testing device for sending and receiving signal
GB2256776B (en) * 1991-05-11 1995-08-23 Motorola Ltd Maintenance terminal unit loopback facility
SE501021C2 (en) * 1993-04-01 1994-10-24 Ericsson Telefon Ab L M Device for testing line connections at telephone exchange
GB9406212D0 (en) * 1994-03-29 1994-05-18 Plessey Telecomm Telecommunication customer interface
US6128369A (en) * 1997-05-14 2000-10-03 A.T.&T. Corp. Employing customer premises equipment in communications network maintenance

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1489741A (en) * 1974-10-17 1977-10-26 Post Office Telecommunication system networks

Also Published As

Publication number Publication date
GB8410676D0 (en) 1984-05-31
GB2158326A (en) 1985-11-06

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee