BE780525A - MOUNTING FOR TELEPHONY SYSTEMS WITH INDUCTIVE ACOUSTIC SIGNAL COUPLING - Google Patents

MOUNTING FOR TELEPHONY SYSTEMS WITH INDUCTIVE ACOUSTIC SIGNAL COUPLING

Info

Publication number
BE780525A
BE780525A BE780525A BE780525A BE780525A BE 780525 A BE780525 A BE 780525A BE 780525 A BE780525 A BE 780525A BE 780525 A BE780525 A BE 780525A BE 780525 A BE780525 A BE 780525A
Authority
BE
Belgium
Prior art keywords
mounting
acoustic signal
signal coupling
telephony systems
inductive
Prior art date
Application number
BE780525A
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 BE780525A publication Critical patent/BE780525A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Telephonic Communication Services (AREA)
BE780525A 1971-03-11 1972-03-10 MOUNTING FOR TELEPHONY SYSTEMS WITH INDUCTIVE ACOUSTIC SIGNAL COUPLING BE780525A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2111787 1971-03-11

Publications (1)

Publication Number Publication Date
BE780525A true BE780525A (en) 1972-09-11

Family

ID=5801255

Family Applications (1)

Application Number Title Priority Date Filing Date
BE780525A BE780525A (en) 1971-03-11 1972-03-10 MOUNTING FOR TELEPHONY SYSTEMS WITH INDUCTIVE ACOUSTIC SIGNAL COUPLING

Country Status (9)

Country Link
AT (1) AT323811B (en)
BE (1) BE780525A (en)
CH (1) CH541914A (en)
DE (1) DE2111787B1 (en)
FR (1) FR2129593A5 (en)
GB (1) GB1370163A (en)
IT (1) IT956223B (en)
LU (1) LU64933A1 (en)
NL (1) NL7202872A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028498A (en) * 1974-10-07 1977-06-07 Solid State Systems, Inc. Private automatic branch exchange system and apparatus
DE3007942A1 (en) * 1980-03-01 1981-09-24 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Tone signal generator for telephone exchange - has circuit which can be connected to one or more subscribers as required and ordered by central controller
DE3014572C2 (en) * 1980-04-16 1982-12-09 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Circuit arrangement for sending low-frequency signals on connecting lines in telephone exchanges
IE54008B1 (en) * 1982-11-17 1989-05-10 Lake Electronic Tech Apparatus for delivering a signal on a telephone

Also Published As

Publication number Publication date
IT956223B (en) 1973-10-10
LU64933A1 (en) 1972-07-07
FR2129593A5 (en) 1972-10-27
DE2111787B1 (en) 1972-05-31
AT323811B (en) 1975-07-25
CH541914A (en) 1973-09-15
NL7202872A (en) 1972-09-13
GB1370163A (en) 1974-10-16

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