IE800874L - Digital telephone station - Google Patents

Digital telephone station

Info

Publication number
IE800874L
IE800874L IE800874A IE87480A IE800874L IE 800874 L IE800874 L IE 800874L IE 800874 A IE800874 A IE 800874A IE 87480 A IE87480 A IE 87480A IE 800874 L IE800874 L IE 800874L
Authority
IE
Ireland
Prior art keywords
line
information
additional equipment
terminals
subscriber
Prior art date
Application number
IE800874A
Other versions
IE49774B1 (en
Original Assignee
Telefonbau & 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6069682&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=IE800874(L) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Telefonbau & Normalzeit Gmbh filed Critical Telefonbau & Normalzeit Gmbh
Publication of IE800874L publication Critical patent/IE800874L/en
Publication of IE49774B1 publication Critical patent/IE49774B1/en

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
    • H04M11/066—Telephone sets adapted for data transmision
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/71—Substation extension arrangements
    • H04M1/715—Substation extension arrangements using two or more extensions per line
    • 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
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Prepayment Telephone Systems (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
  • Telephonic Communication Services (AREA)
  • Bidirectional Digital Transmission (AREA)

Abstract

1. Circuit arrangement for the connection of additional equipment to a digital telephone station (DT) with units (codecs) for the conversion of the voice information in analog signals and vice versa, which are transmitted full duplex via a two wire remotely fed individual subscriber's line (TAL) and with a first line circuit (L1) as interface to the subscriber's line (TAL), whereby the information arriving at the line circuit is forwarded to an interface for the connection of additional equipment and the information arriving from the additional equipment is forwarded to the subscriber's line, comprising a second interface (L2) having a line circuit for the connection of additional equipment, which is identical with the first line circuit (L1) for the subscriber's line (TAL), whereby the information arriving on the subscriber's line (TAL) and appearing at the terminals (a/b) is forwarded to the terminals (a'/b') of the second line circuit (L2), with these terminals an internal line (JAL) for the connection of additional equipment of the digital telephone station (DT) can be connected, the information transmitted from the additional equipment via the internal line (JAL) appearing at the terminals (a'/b') of the second line circuit (L2) is also retransmitted via a processor (VE) to the terminals (a/b) of the first line circuit, whereby the processor (VE), which is used for receiving, evaluation and generation of the received information and the information to be transmitted (for example speech information, signalling, addressing), prevents the retransmission of information, which is exclusively used on the internal line (JAL).
IE874/80A 1979-04-30 1980-04-29 Digital telephone station IE49774B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2917570A DE2917570B1 (en) 1979-04-30 1979-04-30 Circuit arrangement for a digital telephone subscriber station

Publications (2)

Publication Number Publication Date
IE800874L true IE800874L (en) 1980-10-30
IE49774B1 IE49774B1 (en) 1985-12-11

Family

ID=6069682

Family Applications (1)

Application Number Title Priority Date Filing Date
IE874/80A IE49774B1 (en) 1979-04-30 1980-04-29 Digital telephone station

Country Status (5)

Country Link
EP (1) EP0018525B1 (en)
AT (1) ATE2594T1 (en)
AU (1) AU535624B2 (en)
DE (1) DE2917570B1 (en)
IE (1) IE49774B1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3028155C2 (en) * 1980-07-25 1982-10-07 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Digital subscriber line for telephony, including text and data services
CA1153137A (en) * 1981-02-27 1983-08-30 Laurence J. Retallack Parallel operation of telephone equipment on a digital loop
DE3221387A1 (en) * 1982-06-05 1983-12-08 Krone Gmbh, 1000 Berlin DIGITAL TELEPHONE DEVICE WITH CONNECTIONS FOR ANALOG ADDITIONAL DEVICES
FR2559007B1 (en) * 1984-02-01 1987-10-09 Philips Ind Commerciale CONNECTION AND COMMUNICATION SYSTEM AND MEANS FOR TELEPHONE SET AND PERITELEPHONY APPARATUS
GB2167920B (en) * 1984-11-28 1988-12-21 Stc Plc Telephone circuit
GR862206B (en) * 1985-09-12 1986-12-31 Univ Tulane Therapeutic somatostatin analogs

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2643703A1 (en) * 1976-09-28 1978-03-30 Siemens Ag PCM TDM telephone network - has two=wire multiplexed line operated in four-wire mode and with memories and CODEC
DE2729689B1 (en) * 1977-06-30 1978-12-07 Siemens Ag Communication system

Also Published As

Publication number Publication date
DE2917570B1 (en) 1980-05-14
EP0018525B1 (en) 1983-02-16
IE49774B1 (en) 1985-12-11
EP0018525A1 (en) 1980-11-12
ATE2594T1 (en) 1983-03-15
AU5786180A (en) 1980-11-06
AU535624B2 (en) 1984-03-29

Similar Documents

Publication Publication Date Title
EP0139405A3 (en) Data transmission system
FR2641093B1 (en)
EP0324975A3 (en) Transmission system for telephone communication or data transfer
ES8201378A1 (en) Digital message transmission system.
CA2014634A1 (en) Cordless telephone system
US4532377A (en) Data call transfer
AU535624B2 (en) Digital telephone station
ES8402665A1 (en) Apparatus for connecting digital terminals to a digital exchange.
MY107201A (en) Alarm and test system with improved coupling circuit for a digital added main line.
JPS5745769A (en) Control signal system for subscriber terminal connection
JPS54145415A (en) Hybrid terminal equipment
JPS6416043A (en) Packet communication system
JPS6477399A (en) Caller's information transmission confirming system
JPS6484941A (en) System for identifying and transmitting data/voice
JPS5733888A (en) Time division exchange system
DE3264166D1 (en) Parallel operation of telephone equipment on a digital loop
JPS63120549A (en) Automatic dial system for telephone number
JPS6113439B2 (en)
JPS6481596A (en) Extension communication system in isdn user bus
JPS57145468A (en) Data branching and inserting device
JPS6070858A (en) Earth transmitting circuit
CA2022923A1 (en) Hybrid circuit
JPS62248330A (en) Information transmission device using carrier telephony circuit
JPS56169490A (en) Line connecting system
ES2190863A1 (en) An information transmission system and more precisely a telephone system