GB1365534A - Line equipment for telecommunication systems - Google Patents

Line equipment for telecommunication systems

Info

Publication number
GB1365534A
GB1365534A GB4799771A GB4799771A GB1365534A GB 1365534 A GB1365534 A GB 1365534A GB 4799771 A GB4799771 A GB 4799771A GB 4799771 A GB4799771 A GB 4799771A GB 1365534 A GB1365534 A GB 1365534A
Authority
GB
United Kingdom
Prior art keywords
transistor
wire
scanner
line
subscriber
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
GB4799771A
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.)
Alcatel CIT SA
Nokia Inc
Original Assignee
Compagnie Industrielle de Telecommunication CIT Alcatel SA
Nokia 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 Compagnie Industrielle de Telecommunication CIT Alcatel SA, Nokia Inc filed Critical Compagnie Industrielle de Telecommunication CIT Alcatel SA
Publication of GB1365534A publication Critical patent/GB1365534A/en
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
GB4799771A 1970-10-15 1971-10-15 Line equipment for telecommunication systems Expired GB1365534A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7037308A FR2109414A5 (OSRAM) 1970-10-15 1970-10-15

Publications (1)

Publication Number Publication Date
GB1365534A true GB1365534A (en) 1974-09-04

Family

ID=9062811

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4799771A Expired GB1365534A (en) 1970-10-15 1971-10-15 Line equipment for telecommunication systems

Country Status (6)

Country Link
BE (1) BE773743A (OSRAM)
DE (1) DE2102631C3 (OSRAM)
FR (1) FR2109414A5 (OSRAM)
GB (1) GB1365534A (OSRAM)
IT (1) IT942699B (OSRAM)
NL (1) NL7100745A (OSRAM)

Also Published As

Publication number Publication date
FR2109414A5 (OSRAM) 1972-05-26
NL7100745A (OSRAM) 1972-04-18
DE2102631B2 (de) 1973-04-19
BE773743A (fr) 1972-04-11
DE2102631A1 (de) 1972-04-20
IT942699B (it) 1973-04-02
DE2102631C3 (de) 1973-10-31

Similar Documents

Publication Publication Date Title
US3436488A (en) Line circuit for a key telephone system utilizing a single multifunction supervisory relay
GB1053347A (OSRAM)
GB949552A (en) Electronic switching telephone system
US3725600A (en) Communication call holding circuit
US3838223A (en) Ring trip and dial pulse detection circuit
GB1037685A (en) High speed electronic switching telephone system
US4054942A (en) Tip automatic number identification circuit
GB1029479A (en) Electronic telephone exchanges, such as private branch exchanges
US3508009A (en) Range extension circuit
US4117274A (en) Key telephone privacy circuit
GB973717A (en) Automatic telecommunication exchange
US3133995A (en) Call awaiting signal telephone circuits
GB1365534A (en) Line equipment for telecommunication systems
US3155776A (en) Party line sub-station
US3801749A (en) Crosspoint switching matrix incorporating solid state thyristor crosspoints
US3997738A (en) Line circuit for telecommunications exchange using TDM
US2826639A (en) Reverting call circuit for telephone systems
US2785229A (en) Line circuit using transistors
US3171898A (en) Telephone systems
US1674677A (en) Connecter-switch circuit
US2706747A (en) Selector repeater for telephone systems
US2816170A (en) Connector circuit party ringing selection
US3902021A (en) Nuisance call trap circuit
GB1127007A (en) Improvements in or relating to telecommunications exchange systems
US2836659A (en) Local first selector circuit

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee