GB1393777A - Telecommunications exchange systems - Google Patents

Telecommunications exchange systems

Info

Publication number
GB1393777A
GB1393777A GB3675972A GB3675972A GB1393777A GB 1393777 A GB1393777 A GB 1393777A GB 3675972 A GB3675972 A GB 3675972A GB 3675972 A GB3675972 A GB 3675972A GB 1393777 A GB1393777 A GB 1393777A
Authority
GB
United Kingdom
Prior art keywords
responses
sound
speech
subscriber
processor
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
GB3675972A
Other languages
English (en)
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.)
Siemens Corp
Original Assignee
Siemens 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
Application filed by Siemens Corp filed Critical Siemens Corp
Publication of GB1393777A publication Critical patent/GB1393777A/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)
  • Telephonic Communication Services (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
GB3675972A 1971-08-06 1972-08-07 Telecommunications exchange systems Expired GB1393777A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2139546A DE2139546B2 (de) 1971-08-06 1971-08-06 Schaltungsanordnung für Fernsprechanlagen mit zusätzlichem Datenverkehr zwischen den einzelnen Teilnehmerstellen und einer zentraler! Datenverarbeitungsanlage
US27751072A 1972-08-03 1972-08-03
US05/549,497 US4001507A (en) 1971-08-06 1975-02-12 Method and apparatus for telephone systems for facilitating data traffic between the subscriber stations and a central data processor

Publications (1)

Publication Number Publication Date
GB1393777A true GB1393777A (en) 1975-05-14

Family

ID=27183618

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3675972A Expired GB1393777A (en) 1971-08-06 1972-08-07 Telecommunications exchange systems

Country Status (10)

Country Link
US (1) US4001507A (cg-RX-API-DMAC7.html)
AT (1) AT323814B (cg-RX-API-DMAC7.html)
BE (1) BE787246A (cg-RX-API-DMAC7.html)
CH (1) CH549915A (cg-RX-API-DMAC7.html)
DE (1) DE2139546B2 (cg-RX-API-DMAC7.html)
FR (1) FR2149804A5 (cg-RX-API-DMAC7.html)
GB (1) GB1393777A (cg-RX-API-DMAC7.html)
LU (1) LU65853A1 (cg-RX-API-DMAC7.html)
NL (1) NL7210469A (cg-RX-API-DMAC7.html)
SE (1) SE389407B (cg-RX-API-DMAC7.html)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4253157A (en) * 1978-09-29 1981-02-24 Alpex Computer Corp. Data access system wherein subscriber terminals gain access to a data bank by telephone lines
JPS561653A (en) * 1979-06-19 1981-01-09 Hitachi Ltd Aural reply system
US4652700A (en) * 1979-11-26 1987-03-24 Vmx, Inc. Electronic audio communications system with versatile user accessibility
DE3582237D1 (de) * 1985-01-17 1991-04-25 Siemens Ag Verfahren zur zeichenuebertragung zwischen einer datenverarbeitungsanlage und einer fernsprechvermittlungsanlage, insbesondere einer fernsprechnebenstellenanlage.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3153121A (en) * 1960-09-01 1964-10-13 Automatic Elect Lab Airport multi-language announcing system
US3344401A (en) * 1963-03-15 1967-09-26 Burroughs Corp Inquiry system
US3431362A (en) * 1966-04-22 1969-03-04 Bell Telephone Labor Inc Voice-excited,bandwidth reduction system employing pitch frequency pulses generated by unencoded baseband signal
US3507997A (en) * 1966-08-22 1970-04-21 Robert H Weitbrecht Frequency-shift teletypewriter
US3529088A (en) * 1967-05-02 1970-09-15 Werner Hauer Multiplex voice and data transmission system
US3732541A (en) * 1970-04-27 1973-05-08 Licentia Gmbh Method and apparatus for evaluating repetitively transmitted signals
US3641500A (en) * 1970-06-30 1972-02-08 Ibm Voice entry system
US3694811A (en) * 1971-01-04 1972-09-26 Technitrend Inc Query and response system with audio message synthesizing

Also Published As

Publication number Publication date
CH549915A (de) 1974-05-31
DE2139546B2 (de) 1974-04-18
FR2149804A5 (cg-RX-API-DMAC7.html) 1973-03-30
DE2139546A1 (de) 1973-02-15
US4001507A (en) 1977-01-04
BE787246A (fr) 1973-02-05
AT323814B (de) 1975-07-25
LU65853A1 (cg-RX-API-DMAC7.html) 1973-01-15
NL7210469A (cg-RX-API-DMAC7.html) 1973-02-08
SE389407B (sv) 1976-11-01

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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