GB1155685A - Automatic Telecommunication Exchange - Google Patents

Automatic Telecommunication Exchange

Info

Publication number
GB1155685A
GB1155685A GB01151/68A GB1115168A GB1155685A GB 1155685 A GB1155685 A GB 1155685A GB 01151/68 A GB01151/68 A GB 01151/68A GB 1115168 A GB1115168 A GB 1115168A GB 1155685 A GB1155685 A GB 1155685A
Authority
GB
United Kingdom
Prior art keywords
contacts
pulses
line
loop
ens
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
GB01151/68A
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 GB1155685A publication Critical patent/GB1155685A/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)
  • Devices For Supply Of Signal Current (AREA)
  • Telephonic Communication Services (AREA)
GB01151/68A 1967-03-13 1968-03-07 Automatic Telecommunication Exchange Expired GB1155685A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR98472A FR1525156A (fr) 1967-03-13 1967-03-13 Perfectionnements aux systèmes de sélection pour circuits ou équipements électriques

Publications (1)

Publication Number Publication Date
GB1155685A true GB1155685A (en) 1969-06-18

Family

ID=8626801

Family Applications (1)

Application Number Title Priority Date Filing Date
GB01151/68A Expired GB1155685A (en) 1967-03-13 1968-03-07 Automatic Telecommunication Exchange

Country Status (9)

Country Link
US (1) US3562437A (https=)
JP (1) JPS5220804B1 (https=)
BE (1) BE711972A (https=)
CH (1) CH479215A (https=)
DE (1) DE1562228C3 (https=)
ES (1) ES351509A1 (https=)
FR (1) FR1525156A (https=)
GB (1) GB1155685A (https=)
NL (1) NL6803588A (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2419638A1 (fr) * 1978-03-06 1979-10-05 Philips Nv Dispositif pour mesurer l'etat d'un circuit de ligne d'abonne

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7802421A (nl) * 1978-03-06 1979-09-10 Philips Nv Voedingsschakeling voor een abonneelijnstroom- loop.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3231680A (en) * 1961-07-26 1966-01-25 Nippon Electric Co Automatic telephone switching system
GB1052556A (https=) * 1963-06-04

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2419638A1 (fr) * 1978-03-06 1979-10-05 Philips Nv Dispositif pour mesurer l'etat d'un circuit de ligne d'abonne

Also Published As

Publication number Publication date
BE711972A (https=) 1968-09-11
DE1562228C3 (de) 1974-08-29
NL6803588A (https=) 1968-09-16
US3562437A (en) 1971-02-09
FR1525156A (fr) 1968-05-17
DE1562228A1 (de) 1970-03-26
CH479215A (fr) 1969-09-30
DE1562228B2 (de) 1974-02-07
ES351509A1 (es) 1969-12-01
JPS5220804B1 (https=) 1977-06-06

Similar Documents

Publication Publication Date Title
US4468541A (en) Terminal equipment ring/ding suppression circuit
GB1155685A (en) Automatic Telecommunication Exchange
US3781483A (en) Line feed and isolation transformer with integral loop supervision
US3156775A (en) Telephone converter
US2335481A (en) Telephone system
GB1023832A (en) Signaling repeaters
US3247326A (en) Telephone exchange system ringtripping arrangements
US3730999A (en) Telephone ring-trip circuit
US3192323A (en) Telephone system detection circuit
GB1162934A (en) Scanning means for central-controlled telecommunication, particularly telephone exchange systems
GB832727A (en) Remote line concentrator
US3906165A (en) Line circuit in automatic switching system
US3127478A (en) Autoamtic private exchange with facilities for breaking in and conference calls
US2322864A (en) Trouble cutoff system
US2319358A (en) Through supervision system
JPS56168464A (en) Automatic dialing device
US2210739A (en) Through supervision system
US1752429A (en) Telephone set
JPS57107662A (en) Outgoing and incoming call separating type telephone device
US2232362A (en) Selective signaling system
US2590945A (en) Trunk circuit
US1804575A (en) Telephone system
US2225478A (en) Telephone system
US2765369A (en) Guarding circuit for telephone systems
US2667539A (en) Automatic telephone connector circuit