GB8324783D0 - Telecommunication line state detection circuit - Google Patents

Telecommunication line state detection circuit

Info

Publication number
GB8324783D0
GB8324783D0 GB838324783A GB8324783A GB8324783D0 GB 8324783 D0 GB8324783 D0 GB 8324783D0 GB 838324783 A GB838324783 A GB 838324783A GB 8324783 A GB8324783 A GB 8324783A GB 8324783 D0 GB8324783 D0 GB 8324783D0
Authority
GB
United Kingdom
Prior art keywords
detection circuit
state detection
line state
telecommunication line
telecommunication
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
GB838324783A
Other versions
GB2146872B (en
GB2146872A (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 GB08324783A priority Critical patent/GB2146872B/en
Publication of GB8324783D0 publication Critical patent/GB8324783D0/en
Publication of GB2146872A publication Critical patent/GB2146872A/en
Application granted granted Critical
Publication of GB2146872B publication Critical patent/GB2146872B/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
    • H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
GB08324783A 1983-09-15 1983-09-15 Hall effect module for loop detector Expired GB2146872B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08324783A GB2146872B (en) 1983-09-15 1983-09-15 Hall effect module for loop detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08324783A GB2146872B (en) 1983-09-15 1983-09-15 Hall effect module for loop detector

Publications (3)

Publication Number Publication Date
GB8324783D0 true GB8324783D0 (en) 1983-10-19
GB2146872A GB2146872A (en) 1985-04-24
GB2146872B GB2146872B (en) 1986-11-05

Family

ID=10548854

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08324783A Expired GB2146872B (en) 1983-09-15 1983-09-15 Hall effect module for loop detector

Country Status (1)

Country Link
GB (1) GB2146872B (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7301486A (en) * 1973-02-01 1974-08-05
GB1478219A (en) * 1975-02-20 1977-06-29 Standard Telephones Cables Ltd Telecommunication exchange circuits
GB1479094A (en) * 1975-03-25 1977-07-06 Standard Telephones Cables Ltd Ring trip detectors
GB2106710A (en) * 1981-09-22 1983-04-13 Standard Telephones Cables Ltd Hall effect device

Also Published As

Publication number Publication date
GB2146872B (en) 1986-11-05
GB2146872A (en) 1985-04-24

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Legal Events

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