[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

GB628178A - Improvements in or relating to telecommunication switching systems - Google Patents

Improvements in or relating to telecommunication switching systems

Info

Publication number
GB628178A
GB628178A GB2044446A GB2044446A GB628178A GB 628178 A GB628178 A GB 628178A GB 2044446 A GB2044446 A GB 2044446A GB 2044446 A GB2044446 A GB 2044446A GB 628178 A GB628178 A GB 628178A
Authority
GB
United Kingdom
Prior art keywords
relating
selectors
specifications
switching systems
setting
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
GB2044446A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to GB2044446A priority Critical patent/GB628178A/en
Publication of GB628178A publication Critical patent/GB628178A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Telephonic Communication Services (AREA)

Abstract

628,178. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd. (International Standard Electric Corporation). Dec. 8, 1944, No. 20444/46. Divided out of 628,174, under which a Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 7, 1945. Drawings to Specification. [Class 40 (iv)] An automatic exchange system using one method of control (e.g. multi-condition control) for setting its selectors uses another method (e.g. loop impulsing) for setting the selectors of a PBX. The subject-matter is identical with that of Specification 628,174 which, together with Specifications 628,176, 628,177, 628,179 and 628,242, claims other features. Specifications 558,416, 563,501, 573,405, 577,088, 592,846 and 593,687 also are referred to.
GB2044446A 1944-12-08 1944-12-08 Improvements in or relating to telecommunication switching systems Expired GB628178A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2044446A GB628178A (en) 1944-12-08 1944-12-08 Improvements in or relating to telecommunication switching systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2044446A GB628178A (en) 1944-12-08 1944-12-08 Improvements in or relating to telecommunication switching systems

Publications (1)

Publication Number Publication Date
GB628178A true GB628178A (en) 1949-08-24

Family

ID=10146052

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2044446A Expired GB628178A (en) 1944-12-08 1944-12-08 Improvements in or relating to telecommunication switching systems

Country Status (1)

Country Link
GB (1) GB628178A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5794465A (en) * 1995-11-22 1998-08-18 Supra Products, Inc. Key lock box assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5794465A (en) * 1995-11-22 1998-08-18 Supra Products, Inc. Key lock box assembly

Similar Documents

Publication Publication Date Title
GB840922A (en) Time division multiplex telephone system
GB1068227A (en) Improvements in or relating to switching networks for use in telecommunications installations
GB650875A (en) Telecommunication exchange
SE327219B (en)
GB628178A (en) Improvements in or relating to telecommunication switching systems
GB680607A (en) Toll switching telephone system
GB836558A (en) Improvements in or relating to automatic telephone systems
GB788594A (en) Improvements in or relating to automatic telecommunication exchange systems
GB628177A (en) Improvements in or relating to telecommunication switching systems
GB598225A (en) Improvements in or relating to telecommunication systems
GB628179A (en) Improvements in or relating to telecommunication switching systems
GB598224A (en) Improvements in or relating to telecommunication systems
GB754655A (en) Improvements in or relating to automatic telecommunication exchange equipment
GB628176A (en) Improvements in or relating to telecommunication switching systems
GB788593A (en) Improvements in or relating to automatic telecommunication exchange systems
GB1070901A (en) Improvements in or relating to telephone exchange systems
GB642541A (en) Improvements in or relating to telecommunication exchanges and to operators' switchboards therefor
GB957908A (en) Telephone switching systems
GB1032966A (en) Private automatic branch exchanges
GB1034301A (en) Supervisory and remote control systems
GB644861A (en) Telecommunication exchange
IE17624L (en) Telecommunication switching system.
GB1113078A (en) Circuit arrangement for a multi-stage regular crosspoint arrangement
CA508630A (en) Automatic telegraph switching system
IE17613L (en) Automatic telephone switching systems.