GB1458526A - Telecommunications switching networks - Google Patents

Telecommunications switching networks

Info

Publication number
GB1458526A
GB1458526A GB3558173A GB3558173A GB1458526A GB 1458526 A GB1458526 A GB 1458526A GB 3558173 A GB3558173 A GB 3558173A GB 3558173 A GB3558173 A GB 3558173A GB 1458526 A GB1458526 A GB 1458526A
Authority
GB
United Kingdom
Prior art keywords
switch
time
connection
inlet
outlet
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
GB3558173A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB3558173A priority Critical patent/GB1458526A/en
Publication of GB1458526A publication Critical patent/GB1458526A/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
    • H04Q11/06—Time-space-time switching

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

1458526 Automatic exchange systems GENERAL ELECTRIC CO Ltd 25 Oct 1974 [26 July 1973] 35581/73 Heading H4K In a time-space-time switching network each outlet super highway of the incoming time switch 10 and each inlet super highway of the outgoing time switch 14 is duplicated 18, 20 and 22, 24 respectively, and connected to an independently powered and controlled crosspoint matrix of the space switch 12. Overflow from the outgoing to the incoming time switches is provided (Fig. 6) by a link 110 around the space switch. Only one of the duplicate highways is permitted to carry traffic in any one time slot (Fig. 2, not shown). During initial setting up of a connection, the relevant PCM- word speech-memory cell in each incoming time switch is filled with a test word so that successful completion of the connection via the space switch can be immediately ascertained (Fig. 4, not shown). Supermultiplexing of eight, 32 channel highways utilizing 8 bit parallel coding is provided for within the network. If a crosspoint, e.g. 112 (Fig. 6) fails, an alternative connection between inlet 10a and outlet 14b is set up by making use of the overflow connection 110 between outlet 14a and inlet 10b.
GB3558173A 1973-07-26 1973-07-26 Telecommunications switching networks Expired GB1458526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3558173A GB1458526A (en) 1973-07-26 1973-07-26 Telecommunications switching networks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3558173A GB1458526A (en) 1973-07-26 1973-07-26 Telecommunications switching networks

Publications (1)

Publication Number Publication Date
GB1458526A true GB1458526A (en) 1976-12-15

Family

ID=10379333

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3558173A Expired GB1458526A (en) 1973-07-26 1973-07-26 Telecommunications switching networks

Country Status (1)

Country Link
GB (1) GB1458526A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003448A1 (en) * 1978-01-20 1979-08-08 Thomson-Csf Space-time division connection network
FR2507372A1 (en) * 1981-06-09 1982-12-10 Nippon Telegraph & Telephone MEMORY DEVICE OF THE SEQUENTIAL AND SELECTIVE WRITE-READ TYPE FROM ADDRESS INFORMATION
EP0256297A2 (en) * 1986-08-15 1988-02-24 International Business Machines Corporation A cross-point bit-switch
WO1989000371A1 (en) * 1987-06-26 1989-01-12 Italtel Telematica S.P.A. Switching element for pcm signals
GB2273852A (en) * 1992-11-12 1994-06-29 Rockwell International Corp Telecommunications switch bypass
EP0610672A2 (en) * 1993-01-13 1994-08-17 Nec Corporation Time division switch

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003448A1 (en) * 1978-01-20 1979-08-08 Thomson-Csf Space-time division connection network
FR2507372A1 (en) * 1981-06-09 1982-12-10 Nippon Telegraph & Telephone MEMORY DEVICE OF THE SEQUENTIAL AND SELECTIVE WRITE-READ TYPE FROM ADDRESS INFORMATION
EP0256297A2 (en) * 1986-08-15 1988-02-24 International Business Machines Corporation A cross-point bit-switch
EP0256297A3 (en) * 1986-08-15 1989-10-25 International Business Machines Corporation A cross-point bit-switch
WO1989000371A1 (en) * 1987-06-26 1989-01-12 Italtel Telematica S.P.A. Switching element for pcm signals
GB2273852A (en) * 1992-11-12 1994-06-29 Rockwell International Corp Telecommunications switch bypass
EP0610672A2 (en) * 1993-01-13 1994-08-17 Nec Corporation Time division switch
EP0610672A3 (en) * 1993-01-13 1995-11-29 Nec Corp Time division switch.

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee