BE773329A - DEVICE FOR ESTABLISHING COLLECTIVE COMMUNICATIONS IN A TELECOMMUNICATIONS INSTALLATION, IN PARTICULAR IN A TELEPHONE CENTRAL, WITH CODED PULSE MODULATIONS - Google Patents

DEVICE FOR ESTABLISHING COLLECTIVE COMMUNICATIONS IN A TELECOMMUNICATIONS INSTALLATION, IN PARTICULAR IN A TELEPHONE CENTRAL, WITH CODED PULSE MODULATIONS

Info

Publication number
BE773329A
BE773329A BE773329A BE773329A BE773329A BE 773329 A BE773329 A BE 773329A BE 773329 A BE773329 A BE 773329A BE 773329 A BE773329 A BE 773329A BE 773329 A BE773329 A BE 773329A
Authority
BE
Belgium
Prior art keywords
coded pulse
telephone central
telecommunications installation
collective communications
pulse modulations
Prior art date
Application number
BE773329A
Other languages
French (fr)
Original Assignee
Siemens Ag
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 Ag filed Critical Siemens Ag
Publication of BE773329A publication Critical patent/BE773329A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/561—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities by multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Time-Division Multiplex Systems (AREA)
BE773329A 1970-09-30 1971-09-30 DEVICE FOR ESTABLISHING COLLECTIVE COMMUNICATIONS IN A TELECOMMUNICATIONS INSTALLATION, IN PARTICULAR IN A TELEPHONE CENTRAL, WITH CODED PULSE MODULATIONS BE773329A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702048198 DE2048198C2 (en) 1970-09-30 1970-09-30 Circuit arrangement for establishing conference connections in a PCM telecommunications, in particular telephone exchange

Publications (1)

Publication Number Publication Date
BE773329A true BE773329A (en) 1972-03-30

Family

ID=5783876

Family Applications (1)

Application Number Title Priority Date Filing Date
BE773329A BE773329A (en) 1970-09-30 1971-09-30 DEVICE FOR ESTABLISHING COLLECTIVE COMMUNICATIONS IN A TELECOMMUNICATIONS INSTALLATION, IN PARTICULAR IN A TELEPHONE CENTRAL, WITH CODED PULSE MODULATIONS

Country Status (9)

Country Link
AT (1) AT314622B (en)
BE (1) BE773329A (en)
CH (1) CH548716A (en)
DE (1) DE2048198C2 (en)
FR (1) FR2108669A5 (en)
GB (1) GB1336815A (en)
LU (1) LU63973A1 (en)
NL (1) NL7113445A (en)
SE (1) SE366452B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1027265A (en) * 1975-04-23 1978-02-28 Alan S.J. Chapman Method and apparatus for establishing a plurality of simultaneous conferences in a pcm switching system
GB8324058D0 (en) * 1983-09-08 1983-10-12 Plessey Co Plc Conference bridge circuit arrangement

Also Published As

Publication number Publication date
FR2108669A5 (en) 1972-05-19
DE2048198C2 (en) 1975-10-09
NL7113445A (en) 1972-04-05
AT314622B (en) 1974-04-10
DE2048198A1 (en) 1972-05-04
CH548716A (en) 1974-04-30
SE366452B (en) 1974-04-22
LU63973A1 (en) 1972-03-01
GB1336815A (en) 1973-11-14
DE2048198B2 (en) 1972-05-04

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