FR867216A - Central office telecommunications systems - Google Patents

Central office telecommunications systems

Info

Publication number
FR867216A
FR867216A FR867216DA FR867216A FR 867216 A FR867216 A FR 867216A FR 867216D A FR867216D A FR 867216DA FR 867216 A FR867216 A FR 867216A
Authority
FR
France
Prior art keywords
central office
telecommunications systems
office telecommunications
systems
central
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
French (fr)
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR867216A publication Critical patent/FR867216A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Relay Circuits (AREA)
  • Structure Of Telephone Exchanges (AREA)
FR867216D 1939-06-30 1940-09-17 Central office telecommunications systems Expired FR867216A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB274629X 1939-06-30

Publications (1)

Publication Number Publication Date
FR867216A true FR867216A (en) 1941-10-07

Family

ID=10259990

Family Applications (1)

Application Number Title Priority Date Filing Date
FR867216D Expired FR867216A (en) 1939-06-30 1940-09-17 Central office telecommunications systems

Country Status (4)

Country Link
BE (1) BE440574A (en)
CH (1) CH274629A (en)
FR (1) FR867216A (en)
GB (1) GB534459A (en)

Also Published As

Publication number Publication date
GB534459A (en) 1941-03-07
BE440574A (en)
CH274629A (en) 1951-04-15

Similar Documents

Publication Publication Date Title
CH267229A (en) Telecommunications installation at central offices.
FR867450A (en) Central office communications systems
FR838203A (en) Automatic central office teleprinter systems
FR848805A (en) Telecommunications systems
FR867233A (en) Central office teleprinter systems
FR864103A (en) High frequency transmission systems
FR863262A (en) High frequency transmission systems
FR867216A (en) Central office telecommunications systems
FR867232A (en) Central office telecommunications systems
CH237887A (en) Telecommunications installation.
FR864742A (en) Central office telecommunication systems
FR867663A (en) Modulator systems
FR867449A (en) Transmission systems
FR864654A (en) Modulator systems
FR949304A (en) Sheath piston
FR868708A (en) Telecommunications systems
FR865230A (en) Long distance central office telephone systems
FR856333A (en) Central office telecommunications system
FR857688A (en) Central office teleprinter systems
FR855397A (en) Hair-dryer
FR840498A (en) Teleprinter central office systems
FR881294A (en) Telecommunication cables
FR834006A (en) Telephone or similar central office systems
FR940995A (en) Central office telecommunication systems
FR939445A (en) Telephone systems