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FR1362297A - Improvements to telephone systems - Google Patents

Improvements to telephone systems

Info

Publication number
FR1362297A
FR1362297A FR940523A FR940523A FR1362297A FR 1362297 A FR1362297 A FR 1362297A FR 940523 A FR940523 A FR 940523A FR 940523 A FR940523 A FR 940523A FR 1362297 A FR1362297 A FR 1362297A
Authority
FR
France
Prior art keywords
telephone systems
telephone
systems
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
FR940523A
Other languages
French (fr)
Inventor
Hans Kakuschke
Richard Heim
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
Application granted granted Critical
Publication of FR1362297A publication Critical patent/FR1362297A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/58—Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
FR940523A 1962-07-11 1963-07-05 Improvements to telephone systems Expired FR1362297A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST19471A DE1154526B (en) 1962-07-11 1962-07-11 Circuit arrangement for telephone extension systems with direct current push button selection

Publications (1)

Publication Number Publication Date
FR1362297A true FR1362297A (en) 1964-05-29

Family

ID=7458212

Family Applications (1)

Application Number Title Priority Date Filing Date
FR940523A Expired FR1362297A (en) 1962-07-11 1963-07-05 Improvements to telephone systems

Country Status (3)

Country Link
DE (1) DE1154526B (en)
FR (1) FR1362297A (en)
GB (1) GB1023476A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1216379B (en) * 1964-06-30 1966-05-12 Kapsch Telephon Telegraph Circuit arrangement for telephone extension systems with inquiry traffic

Also Published As

Publication number Publication date
DE1154526B (en) 1963-09-19
GB1023476A (en) 1966-03-23

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