GB1264576A - - Google Patents

Info

Publication number
GB1264576A
GB1264576A GB1264576DA GB1264576A GB 1264576 A GB1264576 A GB 1264576A GB 1264576D A GB1264576D A GB 1264576DA GB 1264576 A GB1264576 A GB 1264576A
Authority
GB
United Kingdom
Prior art keywords
transmission
speech
data
sets
subscriber
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
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 filed Critical
Publication of GB1264576A publication Critical patent/GB1264576A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

1,264,576. Automatic exchange systems. SIEMENS A.G. 22 April, 1970 [23 April, 1969], No. 19219/70. Heading H4K. An exchange sets up connections over transmission relay sets which are of different sorts according to the manner of transmission required and which are selected in accordance with a code sent by the calling subscriber before he indicates the identity of the wanted subscriber. The kinds of transmission catered for are speech, teleprinter, data, and video transmission. For speech connections, or for any subscriber calling or called that has only one kind of transmission facility and no choice of transmission relay set, the appropriate relay set may be connected up by the exchange common control on the basis of class-of-service data and without need of a dialled prefix. Switching between speech and data equipment at a substation can be effected manually or can be effected automatically by the common control. Some transmission relay sets may provide for conversion of signals such as converting visual display signals to teleprinter codes. Subscribers may dial for access to a data processing facility or a microfilm library.
GB1264576D 1969-04-23 1970-04-22 Expired GB1264576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1920677 1969-04-23

Publications (1)

Publication Number Publication Date
GB1264576A true GB1264576A (en) 1972-02-23

Family

ID=5732082

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1264576D Expired GB1264576A (en) 1969-04-23 1970-04-22

Country Status (8)

Country Link
AT (1) AT300908B (en)
BE (1) BE749426A (en)
CH (1) CH518045A (en)
DE (1) DE1920677B1 (en)
FR (1) FR2045390A5 (en)
GB (1) GB1264576A (en)
LU (1) LU60772A1 (en)
NL (1) NL7005276A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2172473A (en) * 1985-01-31 1986-09-17 Canon Kk Subscriber speech and data communication apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE786045A (en) * 1971-07-09 1973-01-10 Int Standard Electric Corp DATA TRAFFIC TELEPHONE SYSTEM

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2172473A (en) * 1985-01-31 1986-09-17 Canon Kk Subscriber speech and data communication apparatus
US4825461A (en) * 1985-01-31 1989-04-25 Canon Kabushiki Kaisha Data communication apparatus for data and/or speech communication on a plurality of communication lines
GB2172473B (en) * 1985-01-31 1989-06-07 Canon Kk Communication apparatus

Also Published As

Publication number Publication date
LU60772A1 (en) 1970-06-26
FR2045390A5 (en) 1971-02-26
BE749426A (en) 1970-10-23
DE1920677B1 (en) 1970-04-23
CH518045A (en) 1972-01-15
NL7005276A (en) 1970-10-27
AT300908B (en) 1972-07-15

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees