JPS4866310A - - Google Patents

Info

Publication number
JPS4866310A
JPS4866310A JP12195172A JP12195172A JPS4866310A JP S4866310 A JPS4866310 A JP S4866310A JP 12195172 A JP12195172 A JP 12195172A JP 12195172 A JP12195172 A JP 12195172A JP S4866310 A JPS4866310 A JP S4866310A
Authority
JP
Japan
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.)
Granted
Application number
JP12195172A
Other languages
Japanese (ja)
Other versions
JPS5331326B2 (enrdf_load_stackoverflow
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 filed Critical
Publication of JPS4866310A publication Critical patent/JPS4866310A/ja
Publication of JPS5331326B2 publication Critical patent/JPS5331326B2/ja
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Polyamides (AREA)
  • Circuit For Audible Band Transducer (AREA)
JP12195172A 1971-12-08 1972-12-05 Expired JPS5331326B2 (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7116826A NL155700B (nl) 1971-12-08 1971-12-08 Luidsprekende telefooninrichting.

Publications (2)

Publication Number Publication Date
JPS4866310A true JPS4866310A (enrdf_load_stackoverflow) 1973-09-11
JPS5331326B2 JPS5331326B2 (enrdf_load_stackoverflow) 1978-09-01

Family

ID=19814643

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12195172A Expired JPS5331326B2 (enrdf_load_stackoverflow) 1971-12-08 1972-12-05

Country Status (6)

Country Link
JP (1) JPS5331326B2 (enrdf_load_stackoverflow)
DE (1) DE2258415C3 (enrdf_load_stackoverflow)
FR (1) FR2164357A5 (enrdf_load_stackoverflow)
GB (1) GB1367707A (enrdf_load_stackoverflow)
NL (1) NL155700B (enrdf_load_stackoverflow)
NO (1) NO133988C (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5469307A (en) * 1977-11-14 1979-06-04 Toa Electric Co Ltd Loudspeaking telephone set
JPS5469308A (en) * 1977-11-14 1979-06-04 Toa Electric Co Ltd Audio switch

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO134477C (enrdf_load_stackoverflow) * 1974-10-29 1976-10-13 Manus Max
US4229625A (en) * 1978-12-29 1980-10-21 Bell Telephone Laboratories, Incorporated Repeater level control circuit
US4346261A (en) * 1980-03-17 1982-08-24 United Networks, Inc. Speaker phones
DE3034569C2 (de) * 1980-09-10 1983-10-27 Siemens AG, 1000 Berlin und 8000 München Sprachgesteuerte Lautfernsprechanlage
DD154419A1 (de) * 1980-12-23 1982-03-17 Helmut Kammholz Schaltungsanordnung fuer einen fernsprechapparat mit mithoer-und freisprecheinrichtung
FR2578127A1 (fr) * 1985-02-27 1986-08-29 Jeumont Schneider Procede et dispositif pour la commande d'un poste telephonique a main libre fonctionnant en alternat
GB2197166A (en) * 1986-11-07 1988-05-11 Storno As Controlling gain in speech-controlled telephones
FR2610772B2 (fr) * 1987-02-10 1989-04-28 Telephonie Ind Commerciale Dispositif anti-effet larsen pour poste telephonique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5469307A (en) * 1977-11-14 1979-06-04 Toa Electric Co Ltd Loudspeaking telephone set
JPS5469308A (en) * 1977-11-14 1979-06-04 Toa Electric Co Ltd Audio switch

Also Published As

Publication number Publication date
DE2258415C3 (de) 1980-06-12
NL155700B (nl) 1978-01-16
NL7116826A (enrdf_load_stackoverflow) 1973-06-13
NO133988B (enrdf_load_stackoverflow) 1976-04-20
DE2258415A1 (de) 1973-06-14
JPS5331326B2 (enrdf_load_stackoverflow) 1978-09-01
GB1367707A (en) 1974-09-18
DE2258415B2 (de) 1979-09-20
FR2164357A5 (enrdf_load_stackoverflow) 1973-07-27
NO133988C (enrdf_load_stackoverflow) 1976-07-28

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