GB8509990D0 - Testing telephone subscribers lines - Google Patents

Testing telephone subscribers lines

Info

Publication number
GB8509990D0
GB8509990D0 GB858509990A GB8509990A GB8509990D0 GB 8509990 D0 GB8509990 D0 GB 8509990D0 GB 858509990 A GB858509990 A GB 858509990A GB 8509990 A GB8509990 A GB 8509990A GB 8509990 D0 GB8509990 D0 GB 8509990D0
Authority
GB
United Kingdom
Prior art keywords
telephone subscribers
subscribers lines
testing telephone
testing
lines
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.)
Granted
Application number
GB858509990A
Other versions
GB2173974A (en
GB2173974B (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.)
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 GB08509990A priority Critical patent/GB2173974B/en
Publication of GB8509990D0 publication Critical patent/GB8509990D0/en
Publication of GB2173974A publication Critical patent/GB2173974A/en
Application granted granted Critical
Publication of GB2173974B publication Critical patent/GB2173974B/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
GB08509990A 1985-04-18 1985-04-18 Method of testing telephone subscribers lines Expired GB2173974B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08509990A GB2173974B (en) 1985-04-18 1985-04-18 Method of testing telephone subscribers lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08509990A GB2173974B (en) 1985-04-18 1985-04-18 Method of testing telephone subscribers lines

Publications (3)

Publication Number Publication Date
GB8509990D0 true GB8509990D0 (en) 1985-05-30
GB2173974A GB2173974A (en) 1986-10-22
GB2173974B GB2173974B (en) 1988-09-07

Family

ID=10577874

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08509990A Expired GB2173974B (en) 1985-04-18 1985-04-18 Method of testing telephone subscribers lines

Country Status (1)

Country Link
GB (1) GB2173974B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1259009B (en) * 1992-07-24 1996-03-11 Italtel Telematica METHOD AND DEVICE FOR THE ADAPTATION OF USER TERMINATION IMPEDANCES AND USER ATTACK TO THE CHARACTERISTIC IMPEDANCE OF THE USER TELEPHONE LINE
EP0961467A1 (en) * 1998-05-27 1999-12-01 Porta Systems Corporation Apparatus and method for testing a telecommunications system
US7302379B2 (en) 2003-12-07 2007-11-27 Adaptive Spectrum And Signal Alignment, Inc. DSL system estimation and parameter recommendation
US7809116B2 (en) 2003-12-07 2010-10-05 Adaptive Spectrum And Signal Alignment, Inc. DSL system estimation including known DSL line scanning and bad splice detection capability
CN101238645A (en) 2005-07-10 2008-08-06 适应性频谱和信号校正股份有限公司 Adaptive margin and band control

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3843848A (en) * 1973-01-12 1974-10-22 Magnetic Controls Co Telephone looptest system
IT1142211B (en) * 1981-01-06 1986-10-08 Selenia Ind Elettroniche PORTABLE DEVICE FOR MEASURING THE ATTENUATION OF THE SUBSCRIBER'S TELEPHONE LINE

Also Published As

Publication number Publication date
GB2173974A (en) 1986-10-22
GB2173974B (en) 1988-09-07

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930418