GB2138655B - Telephone subscriber's apparatus - Google Patents

Telephone subscriber's apparatus

Info

Publication number
GB2138655B
GB2138655B GB08410335A GB8410335A GB2138655B GB 2138655 B GB2138655 B GB 2138655B GB 08410335 A GB08410335 A GB 08410335A GB 8410335 A GB8410335 A GB 8410335A GB 2138655 B GB2138655 B GB 2138655B
Authority
GB
United Kingdom
Prior art keywords
telephone subscriber
subscriber
telephone
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
GB08410335A
Other versions
GB2138655A (en
GB8410335D0 (en
Inventor
Walter John George Mellors
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.)
General Electric Co PLC
Original Assignee
General Electric Co 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
Priority claimed from GB838310705A external-priority patent/GB8310705D0/en
Application filed by General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB08410335A priority Critical patent/GB2138655B/en
Publication of GB8410335D0 publication Critical patent/GB8410335D0/en
Publication of GB2138655A publication Critical patent/GB2138655A/en
Application granted granted Critical
Publication of GB2138655B publication Critical patent/GB2138655B/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
GB08410335A 1983-04-20 1984-04-19 Telephone subscriber's apparatus Expired GB2138655B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08410335A GB2138655B (en) 1983-04-20 1984-04-19 Telephone subscriber's apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838310705A GB8310705D0 (en) 1983-04-20 1983-04-20 Telephone subscribers apparatus
GB08410335A GB2138655B (en) 1983-04-20 1984-04-19 Telephone subscriber's apparatus

Publications (3)

Publication Number Publication Date
GB8410335D0 GB8410335D0 (en) 1984-05-31
GB2138655A GB2138655A (en) 1984-10-24
GB2138655B true GB2138655B (en) 1986-08-13

Family

ID=26285880

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08410335A Expired GB2138655B (en) 1983-04-20 1984-04-19 Telephone subscriber's apparatus

Country Status (1)

Country Link
GB (1) GB2138655B (en)

Also Published As

Publication number Publication date
GB2138655A (en) 1984-10-24
GB8410335D0 (en) 1984-05-31

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Legal Events

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