GB675894A - Circuit arrangement for private automatic branch exchanges - Google Patents

Circuit arrangement for private automatic branch exchanges

Info

Publication number
GB675894A
GB675894A GB901650A GB901650A GB675894A GB 675894 A GB675894 A GB 675894A GB 901650 A GB901650 A GB 901650A GB 901650 A GB901650 A GB 901650A GB 675894 A GB675894 A GB 675894A
Authority
GB
United Kingdom
Prior art keywords
extension
relay
master station
exchange line
interim
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
GB901650A
Other languages
English (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.)
Mix und Genest AG
Original Assignee
Mix und Genest AG
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 Mix und Genest AG filed Critical Mix und Genest AG
Publication of GB675894A publication Critical patent/GB675894A/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)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
GB901650A 1949-04-12 1950-04-12 Circuit arrangement for private automatic branch exchanges Expired GB675894A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1949P0039733 DE832305C (de) 1949-04-12 1949-04-12 Schaltungsanordnung fuer Fernsprechnebenstellenanlagen

Publications (1)

Publication Number Publication Date
GB675894A true GB675894A (en) 1952-07-16

Family

ID=6593793

Family Applications (1)

Application Number Title Priority Date Filing Date
GB901650A Expired GB675894A (en) 1949-04-12 1950-04-12 Circuit arrangement for private automatic branch exchanges

Country Status (3)

Country Link
BE (1) BE495079A (enrdf_load_stackoverflow)
DE (1) DE832305C (enrdf_load_stackoverflow)
GB (1) GB675894A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE940360C (de) * 1953-02-11 1956-03-15 Elektrotechnische Werkstaetten Schaltungsanordnung fuer Fernsprech-Nebenstellenanlagen
DE972875C (de) * 1953-09-13 1959-10-22 Siemens Ag Schaltungsanordnung fuer Fernsprechnebenstellenanlagen mit Waehler-betrieb und Sprechstellen verschiedener Verkehrsberechtigung

Also Published As

Publication number Publication date
DE832305C (de) 1952-02-21
BE495079A (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
GB1013594A (en) Improvements in communication switching systems
GB553225A (en) Power line telephone system
GB654096A (en) Telephone systems
GB675894A (en) Circuit arrangement for private automatic branch exchanges
GB522457A (en) Improvements in or relating to systems of simultaneous telephony on a number of lines
GB616834A (en) Improvements in or relating to automatic switches for use in telephone systems
US2338997A (en) Communication system
US3267219A (en) Paging system
US3041410A (en) Delay busy circuit
GB583373A (en) Improvements in automatic switches for use in telephone or like systems
US1330252A (en) Telephone-exchange system
GB496905A (en) Telephone systems
US1256698A (en) Telephone-exchange system.
US2228392A (en) Telephone system
US3159714A (en) Remote concentrator line circuit
GB554136A (en) Improvements in or relating to telephone systems
US1652645A (en) Substation circuit
US1494878A (en) Telephone system
US1800788A (en) Automatic telephone system
GB329626A (en) Improvements in or relating to semi-automatic telephone systems
US3185774A (en) Private branch telephone exchange
US1561936A (en) Telephone-exchange system
GB989933A (en) Improvements to pabx working
US2187508A (en) Telephone system
GB693137A (en) Party line identification dial