GB1494628A - Time division switching system - Google Patents

Time division switching system

Info

Publication number
GB1494628A
GB1494628A GB5503874A GB5503874A GB1494628A GB 1494628 A GB1494628 A GB 1494628A GB 5503874 A GB5503874 A GB 5503874A GB 5503874 A GB5503874 A GB 5503874A GB 1494628 A GB1494628 A GB 1494628A
Authority
GB
United Kingdom
Prior art keywords
call
data processing
frames
time
dec
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
GB5503874A
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.)
AT&T Corp
Original Assignee
Western Electric Co 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
Priority claimed from US427335A external-priority patent/US3903370A/en
Priority claimed from US427339A external-priority patent/US3870826A/en
Priority claimed from US427325A external-priority patent/US3908092A/en
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB1494628A publication Critical patent/GB1494628A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0407—Selecting arrangements for multiplex systems for time-division multiplexing using a stored programme control

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

1494628 Automatic exchange systems WESTERN ELECTRIC CO Inc 19 Dec 1974 [21 Dec 1973 (3)] 55038/74 Heading H4K In a t.d.m. switching system having a plurality of line switches connected to a time division bus, for providing interconnections in respective time slots, data processing means is arranged to be responsive to data relating to each interconnection only during respective time frames assigned thereto in a repetitively recurring series of time frames. The invention is applied to a system having 64 interconnection slots per frame and the data processing is arranged in a superframe of 64 frames whereby call data processing, e.g. call set up and release, is performed during the frame corresponding in number to the time slot allocated to the call. Scanning for new demands for service is performed during any supervisory frame for which the corresponding time slot is not allocated to a call. Specifications 1,494,629 and 1,494,630 claim other aspects of the system. The program is arranged as a number of subroutines corresponding to call states i.e. idle, hook check, register request, dial tone, dialling, busy, ring, and talk. A detailed description of the system is given in the abridgment of Specification 1,494,629.
GB5503874A 1973-12-21 1974-12-19 Time division switching system Expired GB1494628A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US427335A US3903370A (en) 1973-12-21 1973-12-21 Line switch controller for a time division switching system
US427339A US3870826A (en) 1973-12-21 1973-12-21 Tone control system for a time division switching system
US427325A US3908092A (en) 1973-12-21 1973-12-21 Program controlled time division switching systems

Publications (1)

Publication Number Publication Date
GB1494628A true GB1494628A (en) 1977-12-07

Family

ID=27411546

Family Applications (3)

Application Number Title Priority Date Filing Date
GB1987177A Expired GB1494629A (en) 1973-12-21 1974-12-19 Time division switching system
GB5503874A Expired GB1494628A (en) 1973-12-21 1974-12-19 Time division switching system
GB1987277A Expired GB1494630A (en) 1973-12-21 1974-12-19 Time division switching system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1987177A Expired GB1494629A (en) 1973-12-21 1974-12-19 Time division switching system

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB1987277A Expired GB1494630A (en) 1973-12-21 1974-12-19 Time division switching system

Country Status (8)

Country Link
JP (1) JPS5934036B2 (en)
CH (1) CH579336A5 (en)
DE (1) DE2459555C2 (en)
FR (1) FR2279295A1 (en)
GB (3) GB1494629A (en)
IT (1) IT1027831B (en)
NL (1) NL178118C (en)
SE (1) SE409072B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62108544U (en) * 1985-12-25 1987-07-10
JPH04109472U (en) * 1991-03-07 1992-09-22 いすゞ自動車株式会社 Injection pump noise suppression device
JP7411979B2 (en) 2019-07-19 2024-01-12 公立大学法人福島県立医科大学 internal standard gene

Also Published As

Publication number Publication date
NL178118C (en) 1986-01-16
SE409072B (en) 1979-07-23
IT1027831B (en) 1978-12-20
FR2279295A1 (en) 1976-02-13
JPS5934036B2 (en) 1984-08-20
SE7415461L (en) 1975-06-23
NL178118B (en) 1985-08-16
NL7416431A (en) 1975-06-24
GB1494630A (en) 1977-12-07
DE2459555C2 (en) 1985-04-04
JPS5096107A (en) 1975-07-31
CH579336A5 (en) 1976-08-31
DE2459555A1 (en) 1975-07-03
FR2279295B1 (en) 1978-12-29
GB1494629A (en) 1977-12-07

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Legal Events

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