GB230763A - Improvements in or relating to telephone exchange systems - Google Patents

Improvements in or relating to telephone exchange systems

Info

Publication number
GB230763A
GB230763A GB2958824A GB2958824A GB230763A GB 230763 A GB230763 A GB 230763A GB 2958824 A GB2958824 A GB 2958824A GB 2958824 A GB2958824 A GB 2958824A GB 230763 A GB230763 A GB 230763A
Authority
GB
United Kingdom
Prior art keywords
exchange systems
relating
telephone exchange
impulse
impulse relay
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
GB2958824A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2958824A priority Critical patent/GB230763A/en
Publication of GB230763A publication Critical patent/GB230763A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q3/00Selecting arrangements
    • H04Q3/58Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625Arrangements 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)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

230,763. Western Electric Co., Ltd., (Deakin, G.). Sept. 11, 1923. Drawings to Specification. Automatic exchange systems.-The stepping magnet of a selector is exclusively controlled by an impulse relay in response to dialling impulses, but can also operate automatically under the control of an interrupter contact which is arranged to be short-circuited by the impulse relay when the latter de-energizes during impulse transmission. The system described is identical with that described in Specification 226,265, which claims other features. Specification 208,073, [Class 38 (v), Electric switches &c.], also is referred to.
GB2958824A 1923-09-11 1923-09-11 Improvements in or relating to telephone exchange systems Expired GB230763A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2958824A GB230763A (en) 1923-09-11 1923-09-11 Improvements in or relating to telephone exchange systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2958824A GB230763A (en) 1923-09-11 1923-09-11 Improvements in or relating to telephone exchange systems

Publications (1)

Publication Number Publication Date
GB230763A true GB230763A (en) 1925-03-11

Family

ID=10293898

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2958824A Expired GB230763A (en) 1923-09-11 1923-09-11 Improvements in or relating to telephone exchange systems

Country Status (1)

Country Link
GB (1) GB230763A (en)

Similar Documents

Publication Publication Date Title
GB230763A (en) Improvements in or relating to telephone exchange systems
US2460475A (en) Arrangement for changing over the speaking direction in loud-speaker duplex systems
US2033283A (en) Signaling system
US2466484A (en) Subscriber ringing circuit
GB580040A (en) Improvements in or relating to telephone systems and automatic switches for use therein
GB494582A (en) Improvements in or relating to telegraph switching systems
GB482014A (en) Improvements relating to telephone systems
GB318956A (en) Improvements in and relating to automatic and semi-automatic exchange systems
GB526833A (en) Improvements in or relating to arrangements for receiving telegraph impulses
GB267610A (en) Improvements in automatic or semi-automatic telephone systems
US2071547A (en) Signaling system
GB459287A (en) Improvements in or relating to wiper switches such as are used in automatic telephone systems
GB228824A (en) Electric switches for telephone systems
US1592084A (en) Telephone system
GB285618A (en) Selectors for automatic and semi-automatic telephone systems
GB296424A (en) Circuit arrangement for double duty selectors in telephone installations
GB266054A (en) Improvements in or relating to selecting switches for use in telephone exchange systems
GB734911A (en) Improvements in or relating to telephone systems
GB652629A (en) Improvements in automatic switching systems
GB588790A (en) Improvements in or relating to automatic switches for use in telephone or like systems
GB314411A (en) Improvements in relay arrangements particularly for use in automatic or semi-automatic telephone systems
GB324983A (en) Improvements in or relating to automatic or semi-automatic telephone systems
GB324094A (en) Improvements in or relating to telephone systems
GB207483A (en) Automatic telephone system and switching apparatus therefor
GB221175A (en) Improvements in or relating to telephone systems