IE801013L - Circuit for telephones - Google Patents

Circuit for telephones

Info

Publication number
IE801013L
IE801013L IE801013A IE101380A IE801013L IE 801013 L IE801013 L IE 801013L IE 801013 A IE801013 A IE 801013A IE 101380 A IE101380 A IE 101380A IE 801013 L IE801013 L IE 801013L
Authority
IE
Ireland
Prior art keywords
telephone instrument
line
pcm
leading
extension line
Prior art date
Application number
IE801013A
Other versions
IE50423B1 (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=6070793&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=IE801013(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 IE801013L publication Critical patent/IE801013L/en
Publication of IE50423B1 publication Critical patent/IE50423B1/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
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

1. Circuitry for telephone instruments connected to PCM- extension lines in which digital speech information transmitted via a duplex two-wire PCM-line with feeding facilities leading to a PCM-exchange is transformed into analogous values when incoming and is transformed out of analogous values when outgoing by equipment arranged inside a codec (CD) and in which control units (S) receive and compute signalling information, comprising that besides the control units (S) being inside the telephone instrument and provided for computing signalling information incoming and outgoing via the extension line (a/b), there is provided a coupling unit (KE) also being contained in the telephone instrument for switching through speech and tone signals, which selectively enables connections between the codec (CD) inside the same telephone instrument or an information sending unit (IS) or an information receiving unit (IE) and the only extension line (a/b) leading to an exchange or to a connection line (a'/b') leading to a further telephone instrument as well as connections between the extension line (a/b) and the connection line (a'/b'), whereby this coupling unit (KE) is controlled by an operation-status-control (BS) corresponding to commands coming from the extension line (a/b) or the connection line (a'/b') or coming from the operation elements, for example keys (T), hook switches (GU) of the telephone instrument.
IE1013/80A 1979-05-16 1980-05-15 Circuit arrangement for telephone instruments connected via pcm-subscriber lines IE50423B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2919618A DE2919618C2 (en) 1979-05-16 1979-05-16 Circuit arrangement for telephone sets connected to PCM connection lines

Publications (2)

Publication Number Publication Date
IE801013L true IE801013L (en) 1980-11-16
IE50423B1 IE50423B1 (en) 1986-04-16

Family

ID=6070793

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1013/80A IE50423B1 (en) 1979-05-16 1980-05-15 Circuit arrangement for telephone instruments connected via pcm-subscriber lines

Country Status (4)

Country Link
EP (1) EP0019250B1 (en)
AT (1) ATE1925T1 (en)
DE (1) DE2919618C2 (en)
IE (1) IE50423B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2518857A1 (en) * 1981-12-18 1983-06-24 Thomson Csf Mat Tel TELEMATIC TERMINAL CONNECTED TO TWO TELEPHONE LINES AND PARTIALLY REMOTE POWERED
US5042028A (en) * 1988-08-31 1991-08-20 Kabushiki Kaisha Toshiba Communication terminal device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1171020B (en) * 1962-11-15 1964-05-27 Telefonbau Circuit arrangement for boss-secretary stations in telephone extension systems
DE2421002C3 (en) * 1974-04-30 1980-07-03 Siemens Ag, 1000 Berlin Und 8000 Muenchen Messaging system
GB1540900A (en) * 1975-06-30 1979-02-21 Ericsson L M Pty Ltd Digital testing and power control in a digital communication system
GB1521127A (en) * 1975-10-02 1978-08-16 Standard Telephones Cables Ltd Telecommunication systems
DE2619391C3 (en) * 1976-04-30 1978-11-30 Siemens Ag, 1000 Berlin Und 8000 Muenchen Message system with multiple access and decentralized switching
DE2621603C3 (en) * 1976-05-14 1978-11-16 Siemens Ag, 1000 Berlin Und 8000 Muenchen Method and circuit arrangement for the independent transmission of PCM message words and signaling words between a subscriber station and an exchange
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
US4122308A (en) * 1977-06-03 1978-10-24 Utility Verification Corp. Telephone call metering device
DE2729689B1 (en) * 1977-06-30 1978-12-07 Siemens Ag Communication system

Also Published As

Publication number Publication date
DE2919618B1 (en) 1980-08-21
EP0019250B1 (en) 1982-12-01
DE2919618C2 (en) 1981-06-19
ATE1925T1 (en) 1982-12-15
EP0019250A1 (en) 1980-11-26
IE50423B1 (en) 1986-04-16

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