FR988281A - Système de commutation téléphonique - Google Patents

Système de commutation téléphonique

Info

Publication number
FR988281A
FR988281A FR988281DA FR988281A FR 988281 A FR988281 A FR 988281A FR 988281D A FR988281D A FR 988281DA FR 988281 A FR988281 A FR 988281A
Authority
FR
France
Prior art keywords
switching system
telephone switching
telephone
switching
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
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.)
AT&T Inc
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of FR988281A publication Critical patent/FR988281A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/40—Signalling arrangements; Manipulation of signalling currents whereby duration of pulse or interval between two pulses is variable

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
FR988281D 1948-06-29 1949-06-14 Système de commutation téléphonique Expired FR988281A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US671679XA 1948-06-29 1948-06-29
US35925A US2620399A (en) 1948-06-29 1948-06-29 Telephone switching system employing repetitive impulsing

Publications (1)

Publication Number Publication Date
FR988281A true FR988281A (fr) 1951-08-24

Family

ID=26712621

Family Applications (1)

Application Number Title Priority Date Filing Date
FR988281D Expired FR988281A (fr) 1948-06-29 1949-06-14 Système de commutation téléphonique

Country Status (2)

Country Link
US (1) US2620399A (fr)
FR (1) FR988281A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747020A (en) * 1951-11-24 1956-05-22 Gen Electric Co Ltd Telecommunication systems embodying automatic exchanges
US2740003A (en) * 1952-10-25 1956-03-27 Bell Telephone Labor Inc Rotational use of register circuits in telephone switching systems
BE527189A (fr) * 1953-03-12
GB804042A (en) * 1955-06-07 1958-11-05 British Telecomm Res Ltd Improvements in or relating to telephone systems

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR568149A (fr) * 1922-02-23 1924-03-17 Thomson Houston Comp Francaise Système téléphonique automatique pour grand réseau, avec traducteur et dispositif de contrôle
US1723209A (en) * 1925-06-06 1929-08-06 Automatic Electric Inc Automatic telephone system
US1810865A (en) * 1928-05-09 1931-06-16 Warwick Harold Lynwood Automatic telephone system
US2418609A (en) * 1944-10-23 1947-04-08 Amanda Obergfell Telephone system

Also Published As

Publication number Publication date
US2620399A (en) 1952-12-02

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