GB2011748B - Electrical communication systems - Google Patents

Electrical communication systems

Info

Publication number
GB2011748B
GB2011748B GB7842554A GB7842554A GB2011748B GB 2011748 B GB2011748 B GB 2011748B GB 7842554 A GB7842554 A GB 7842554A GB 7842554 A GB7842554 A GB 7842554A GB 2011748 B GB2011748 B GB 2011748B
Authority
GB
United Kingdom
Prior art keywords
communication systems
electrical communication
electrical
systems
communication
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
GB7842554A
Other versions
GB2011748A (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.)
NEUMANN ELEKTRONIK GmbH
Original Assignee
NEUMANN ELEKTRONIK GmbH
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 NEUMANN ELEKTRONIK GmbH filed Critical NEUMANN ELEKTRONIK GmbH
Publication of GB2011748A publication Critical patent/GB2011748A/en
Application granted granted Critical
Publication of GB2011748B publication Critical patent/GB2011748B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Amplifiers (AREA)
GB7842554A 1977-12-29 1978-10-31 Electrical communication systems Expired GB2011748B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2758776A DE2758776C2 (en) 1977-12-29 1977-12-29 Electrical transmission system, in particular exchange, counter or loudspeaker system

Publications (2)

Publication Number Publication Date
GB2011748A GB2011748A (en) 1979-07-11
GB2011748B true GB2011748B (en) 1982-04-28

Family

ID=6027669

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7842554A Expired GB2011748B (en) 1977-12-29 1978-10-31 Electrical communication systems

Country Status (4)

Country Link
AT (1) AT374064B (en)
DE (1) DE2758776C2 (en)
GB (1) GB2011748B (en)
IT (1) IT1107529B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3642378A1 (en) * 1986-12-11 1988-06-30 Siemens Ag System for transmitting information with reserve switching devices

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2422806C3 (en) * 1974-05-10 1985-08-29 Neumann Elektronik GmbH, 4330 Mülheim Device for the concentration of the line selection means in a key-operated intercom
DE2605499A1 (en) * 1976-02-12 1977-08-18 Licentia Gmbh Monitor for analogue amplifier - switches in reserve amplifier when main fails using electrooptical coupler and XOR gate

Also Published As

Publication number Publication date
ATA643978A (en) 1983-07-15
IT7883641A0 (en) 1978-12-14
IT1107529B (en) 1985-11-25
AT374064B (en) 1984-03-12
DE2758776A1 (en) 1979-08-16
DE2758776C2 (en) 1987-11-12
GB2011748A (en) 1979-07-11

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19941031