GB1529654A - Signalling arrangement for telecommunications systems - Google Patents

Signalling arrangement for telecommunications systems

Info

Publication number
GB1529654A
GB1529654A GB1953577A GB1953577A GB1529654A GB 1529654 A GB1529654 A GB 1529654A GB 1953577 A GB1953577 A GB 1953577A GB 1953577 A GB1953577 A GB 1953577A GB 1529654 A GB1529654 A GB 1529654A
Authority
GB
United Kingdom
Prior art keywords
signals
line
signalling
highway
various
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
GB1953577A
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
Priority claimed from US05/686,303 external-priority patent/US4075430A/en
Priority claimed from US05/686,377 external-priority patent/US4081613A/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1529654A publication Critical patent/GB1529654A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/521—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using semiconductors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Abstract

1529654 Automatic exchange systems INTERNATIONAL STANDARD ELECTRIC CORP 10 May 1977 [14 May 1976] 19535/77 Heading H4K In an exchange having subscribers lines connected to a switching network via individual line circuits, groups of line circuits are coupled to respective group signalling highways H0-H111 over which various signals are distributed to the line circuits. The signals include ringing signals for various types of line, coin collect and reject signals for pay stations, party line test signals and test multifrequency test signals. A reed relay matrix couples the various group highways to the various signal sources, the signals being distributed on a highway in a TDM manner. The exchange is of the type having a central processor e.g. of the stored programme type, and the processor is also connected to each line cicuit (Figure 3, not shown) to control the connection of the line circuit to the signalling highway. For testing purposes signals may be sent in both directions over the signalling highway. The switching network may be an electronic network or a TDM, PCM network e.g. of a type which cannot pass high voltage signals.
GB1953577A 1976-05-14 1977-05-10 Signalling arrangement for telecommunications systems Expired GB1529654A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/686,303 US4075430A (en) 1976-05-14 1976-05-14 Line signalling over common highway for telecommunications system
US05/686,377 US4081613A (en) 1976-05-14 1976-05-14 Bi-directional signalling arrangement for telecommunications systems

Publications (1)

Publication Number Publication Date
GB1529654A true GB1529654A (en) 1978-10-25

Family

ID=27103777

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1953577A Expired GB1529654A (en) 1976-05-14 1977-05-10 Signalling arrangement for telecommunications systems

Country Status (2)

Country Link
DE (1) DE2720081C2 (en)
GB (1) GB1529654A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4349703A (en) * 1980-03-31 1982-09-14 International Telephone And Telegraph Corporation Programmable ring signal generator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE624028A (en) * 1960-03-23 1900-01-01
US3801749A (en) * 1972-06-20 1974-04-02 N Jovic Crosspoint switching matrix incorporating solid state thyristor crosspoints
US3978293A (en) * 1974-11-07 1976-08-31 Bell Telephone Laboratories, Incorporated Ringing control circuitry with shared ringing loop current detector

Also Published As

Publication number Publication date
DE2720081C2 (en) 1983-04-21
DE2720081A1 (en) 1977-12-01

Similar Documents

Publication Publication Date Title
US2532097A (en) Decentralized line switch arrangement
GB1472924A (en) Telephone call simulator
Breen et al. Signaling systems for control of telephone switching
US5228081A (en) Ringing signal control circuit for an enhanced subscriber line interface
US2385061A (en) Communication system
US3555198A (en) Identifier to determine the class of service to which a subscriber is entitled
GB1521127A (en) Telecommunication systems
ES373468A1 (en) Telephone switching circuit with call-waiting service
US3106615A (en) Communication switching system
GB1529654A (en) Signalling arrangement for telecommunications systems
US2806088A (en) Communication system
US2275459A (en) Telephone system
US3760117A (en) Electromechanical common control crosspoint telephone switching system
US4025727A (en) Balanced tone application system
US2237742A (en) Telephone system
GB776026A (en) Traffic supervisory arrangements in telephone systems
GB1029204A (en) Improvements in or relating to telephone switching systems
GB1401627A (en) Testing for telecommunications switching systems
Digrindakis et al. Peripheral system
GB926973A (en) A circuit arrangement for a telecommunications installation
US3712963A (en) Frequency ringing test trunk circuit
US3751607A (en) Method of control of line circuit cutoff relay
US2802058A (en) Automatic exchange systems
Klees et al. Switching units and trunking for electronic automatic exchange
US866266A (en) Telephone system.

Legal Events

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