GB1396228A - Time multiplex telecommunication exchanges - Google Patents

Time multiplex telecommunication exchanges

Info

Publication number
GB1396228A
GB1396228A GB2429073A GB2429073A GB1396228A GB 1396228 A GB1396228 A GB 1396228A GB 2429073 A GB2429073 A GB 2429073A GB 2429073 A GB2429073 A GB 2429073A GB 1396228 A GB1396228 A GB 1396228A
Authority
GB
United Kingdom
Prior art keywords
bar
bus
connection
twice
great
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
GB2429073A
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.)
Tenovis GmbH and Co KG
Original Assignee
Telefonbau und Normalzeit GmbH
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 Telefonbau und Normalzeit GmbH filed Critical Telefonbau und Normalzeit GmbH
Publication of GB1396228A publication Critical patent/GB1396228A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/10—Arrangements for reducing cross-talk between channels

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Small-Scale Networks (AREA)

Abstract

1396228 Multiplex pulse signalling; automatic exchange systems TELEFONBAU UND NORMALZEIT GmbH 22 May 1973 [26 June 1972] 24290/73 Headings H4L and H4K In a t.d.m. system, for reducing crosstalk, each transmitting channel at its connection with a common bus-bar has an output impedance more than twice as great as the input impedance of a single receiving channel at its point of connection with the bus-bar and more than twice as great as the characteristic impedance of any coaxial cable forming the major part of the bus-bar. The high output impedance may be provided by the arrangement shown in Fig. 3, which provides unity amplification. Diode D12 is connected to the feed conductor of the coaxial cable KL and resistor R4 to the return conductor. A modification, Fig. 4 (not shown), includes a feedback connection via an additional transistor.
GB2429073A 1972-06-26 1973-05-22 Time multiplex telecommunication exchanges Expired GB1396228A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2231250A DE2231250C2 (en) 1972-06-26 1972-06-26 Circuit arrangement for the elimination of temporal crosstalk in time division multiplex switching equipment

Publications (1)

Publication Number Publication Date
GB1396228A true GB1396228A (en) 1975-06-04

Family

ID=5848843

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2429073A Expired GB1396228A (en) 1972-06-26 1973-05-22 Time multiplex telecommunication exchanges

Country Status (8)

Country Link
AT (1) AT326734B (en)
BE (1) BE796702A (en)
CH (1) CH558996A (en)
DE (1) DE2231250C2 (en)
DK (1) DK133840C (en)
FR (1) FR2191372B1 (en)
GB (1) GB1396228A (en)
NL (1) NL7304439A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1300524A (en) * 1960-09-16 1962-08-03 Gen Electric Co Ltd Improvements to electrical pulse transmission systems

Also Published As

Publication number Publication date
CH558996A (en) 1975-02-14
DE2231250B1 (en) 1973-07-26
FR2191372A1 (en) 1974-02-01
NL7304439A (en) 1973-12-28
DK133840C (en) 1976-12-13
ATA556373A (en) 1975-03-15
BE796702A (en) 1973-07-02
DK133840B (en) 1976-07-26
AT326734B (en) 1975-12-29
DE2231250C2 (en) 1974-02-21
FR2191372B1 (en) 1978-10-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee