GB2121549B - Apparatus for determining the loudness rating of a telephone system - Google Patents

Apparatus for determining the loudness rating of a telephone system

Info

Publication number
GB2121549B
GB2121549B GB08215938A GB8215938A GB2121549B GB 2121549 B GB2121549 B GB 2121549B GB 08215938 A GB08215938 A GB 08215938A GB 8215938 A GB8215938 A GB 8215938A GB 2121549 B GB2121549 B GB 2121549B
Authority
GB
United Kingdom
Prior art keywords
determining
telephone system
loudness rating
loudness
rating
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
GB08215938A
Other versions
GB2121549A (en
Inventor
George John Preston Barnes
Michael Stanley Hurley
David Ebenezer James Dawson
Qiang He Jian
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 GB08215938A priority Critical patent/GB2121549B/en
Publication of GB2121549A publication Critical patent/GB2121549A/en
Application granted granted Critical
Publication of GB2121549B publication Critical patent/GB2121549B/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)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
GB08215938A 1982-06-01 1982-06-01 Apparatus for determining the loudness rating of a telephone system Expired GB2121549B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08215938A GB2121549B (en) 1982-06-01 1982-06-01 Apparatus for determining the loudness rating of a telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08215938A GB2121549B (en) 1982-06-01 1982-06-01 Apparatus for determining the loudness rating of a telephone system

Publications (2)

Publication Number Publication Date
GB2121549A GB2121549A (en) 1983-12-21
GB2121549B true GB2121549B (en) 1985-08-29

Family

ID=10530767

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08215938A Expired GB2121549B (en) 1982-06-01 1982-06-01 Apparatus for determining the loudness rating of a telephone system

Country Status (1)

Country Link
GB (1) GB2121549B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8808623D0 (en) * 1988-04-12 1988-05-11 British Telecomm Customer line tester

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1083533B (en) * 1977-06-20 1985-05-21 Cselt Centro Studi Lab Telecom PROCEDURE AND DEVICE FOR THE GENERATION OF A VOICE TYPE SIGNAL FOR THE PERFORMANCE OF OBJECTIVE MEASUREMENTS OF EQUIPMENT PERFORMANCE PART OF VOICE SIGNAL TRANSMISSION SYSTEMS

Also Published As

Publication number Publication date
GB2121549A (en) 1983-12-21

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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)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20020531