GB2185660B - Private automatic branch exchange - Google Patents

Private automatic branch exchange

Info

Publication number
GB2185660B
GB2185660B GB8701240A GB8701240A GB2185660B GB 2185660 B GB2185660 B GB 2185660B GB 8701240 A GB8701240 A GB 8701240A GB 8701240 A GB8701240 A GB 8701240A GB 2185660 B GB2185660 B GB 2185660B
Authority
GB
United Kingdom
Prior art keywords
branch exchange
automatic branch
private automatic
private
exchange
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
GB8701240A
Other versions
GB2185660A (en
GB8701240D0 (en
Inventor
Augustine Anthony Bermingham
Stephen Augustine Mcmahon
Declan Gibbons
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.)
Lake Electronic Technologies Ltd
Original Assignee
Lake Electronic Technologies Ltd
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 Lake Electronic Technologies Ltd filed Critical Lake Electronic Technologies Ltd
Publication of GB8701240D0 publication Critical patent/GB8701240D0/en
Publication of GB2185660A publication Critical patent/GB2185660A/en
Application granted granted Critical
Publication of GB2185660B publication Critical patent/GB2185660B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
    • H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Studio Circuits (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
GB8701240A 1986-01-21 1987-01-21 Private automatic branch exchange Expired GB2185660B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE17286A IE860172L (en) 1986-01-21 1986-01-21 Private automatic branch exchange

Publications (3)

Publication Number Publication Date
GB8701240D0 GB8701240D0 (en) 1987-02-25
GB2185660A GB2185660A (en) 1987-07-22
GB2185660B true GB2185660B (en) 1989-10-25

Family

ID=11008094

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8701240A Expired GB2185660B (en) 1986-01-21 1987-01-21 Private automatic branch exchange

Country Status (3)

Country Link
BE (1) BE904512A (en)
GB (1) GB2185660B (en)
IE (1) IE860172L (en)

Also Published As

Publication number Publication date
GB2185660A (en) 1987-07-22
GB8701240D0 (en) 1987-02-25
BE904512A (en) 1986-07-16
IE860172L (en) 1987-07-21

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Legal Events

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