GB1433969A - Frequency multiplex switching system - Google Patents

Frequency multiplex switching system

Info

Publication number
GB1433969A
GB1433969A GB2254674A GB2254674A GB1433969A GB 1433969 A GB1433969 A GB 1433969A GB 2254674 A GB2254674 A GB 2254674A GB 2254674 A GB2254674 A GB 2254674A GB 1433969 A GB1433969 A GB 1433969A
Authority
GB
United Kingdom
Prior art keywords
line
dialling
over
relays
subscribers
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
GB2254674A
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.)
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
Publication of GB1433969A publication Critical patent/GB1433969A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/02—Selecting arrangements for multiplex systems for frequency-division multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Interface Circuits In Exchanges (AREA)
GB2254674A 1973-05-22 1974-05-21 Frequency multiplex switching system Expired GB1433969A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7318456A FR2231172B1 (enExample) 1973-05-22 1973-05-22

Publications (1)

Publication Number Publication Date
GB1433969A true GB1433969A (en) 1976-04-28

Family

ID=9119708

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2254674A Expired GB1433969A (en) 1973-05-22 1974-05-21 Frequency multiplex switching system

Country Status (11)

Country Link
US (1) US3866178A (enExample)
JP (1) JPS547523B2 (enExample)
BE (1) BE815322R (enExample)
BR (1) BR7404032D0 (enExample)
CA (1) CA1035452A (enExample)
DE (1) DE2422992A1 (enExample)
ES (1) ES426502A1 (enExample)
FR (1) FR2231172B1 (enExample)
GB (1) GB1433969A (enExample)
IT (1) IT1012435B (enExample)
NL (1) NL7406789A (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016493A (en) * 1975-10-22 1977-04-05 General Electric Company Simplified land line and satellite communication switching system
SE7605253L (sv) * 1976-05-10 1977-11-11 Persson Paul Manfred System for att overfora information
US4191941A (en) * 1978-04-03 1980-03-04 Rca Corporation Switch matrix for data transfers
US4789980A (en) * 1986-08-18 1988-12-06 American Telephone & Telegraph Company, At&T Bell Laboratories Switching techniques for FDM communication systems

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3480733A (en) * 1964-08-04 1969-11-25 Nippon Electric Co Frequency allocation system for common amplification of multifrequency carriers

Also Published As

Publication number Publication date
CA1035452A (en) 1978-07-25
FR2231172A1 (enExample) 1974-12-20
FR2231172B1 (enExample) 1977-02-11
AU6901574A (en) 1975-11-20
IT1012435B (it) 1977-03-10
JPS50132804A (enExample) 1975-10-21
BR7404032D0 (pt) 1974-12-03
JPS547523B2 (enExample) 1979-04-07
US3866178A (en) 1975-02-11
ES426502A1 (es) 1976-09-01
DE2422992A1 (de) 1974-12-12
NL7406789A (enExample) 1974-11-26
BE815322R (fr) 1974-11-21

Similar Documents

Publication Publication Date Title
US4009342A (en) Circuit arrangement for communication facilities wherein transmission paths can be employed for different types of message switching
US5884167A (en) Method for completing a conference with a personal communications units
US2265056A (en) Radio telephone system
GB1010299A (en) Multiple channel radio telephone system
GB1283968A (en) Switching systems
US3865995A (en) Universal subscriber{3 s line circuit in a key telephone system
GB948929A (en) Improvements in or relating to communication systems
CA1081832A (en) Arrangement serving operator assistance calls requiring routing back to originating offices
US2200820A (en) Automatic telephone system
CA1147074A (en) Dialing interval transmission gating arrangement
US1927531A (en) Telephone system
US3406260A (en) Intercom system with separate signal, ringing, and talking links
US3089000A (en) Intercommunicating telephone systems
US3617642A (en) Time division multiplex system
JPS5997237A (ja) 海事衛星通信システムにおけるコンパンダ制御方式
US2247254A (en) Automatic telephone system
US2897285A (en) Intercommunicating system
KR950003723B1 (ko) 사설 교환기에서 메시지에 의한 자동 교환 방법
US3467786A (en) Means for automatic telephone traffic to subscriber's lines in private automatic branch exchanges
US2765367A (en) Time division multiplex multi-station per line telephone system
JP3060738B2 (ja) 端末機器選択接続装置及び端末機器選択接続方法
JPS6247023B2 (enExample)
GB666500A (en) Automatic exchange systems
US3501595A (en) Disconnection of absentee service in telephone exchanges
SU1336270A1 (ru) Устройство сопр жени радиорелейной станции с автоматической телефонной станцией

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee