AT373111B - CIRCUIT ARRANGEMENT FOR A TELEPHONE WITH A HANDS-FREE UNIT - Google Patents

CIRCUIT ARRANGEMENT FOR A TELEPHONE WITH A HANDS-FREE UNIT

Info

Publication number
AT373111B
AT373111B AT427879A AT427879A AT373111B AT 373111 B AT373111 B AT 373111B AT 427879 A AT427879 A AT 427879A AT 427879 A AT427879 A AT 427879A AT 373111 B AT373111 B AT 373111B
Authority
AT
Austria
Prior art keywords
hands
telephone
circuit arrangement
free unit
free
Prior art date
Application number
AT427879A
Other languages
German (de)
Other versions
ATA427879A (en
Original Assignee
Int Standard Electric Corp
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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of ATA427879A publication Critical patent/ATA427879A/en
Application granted granted Critical
Publication of AT373111B publication Critical patent/AT373111B/en

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)
  • Telephone Function (AREA)
  • Circuit For Audible Band Transducer (AREA)
AT427879A 1978-06-19 1979-06-18 CIRCUIT ARRANGEMENT FOR A TELEPHONE WITH A HANDS-FREE UNIT AT373111B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782826671 DE2826671C3 (en) 1978-06-19 1978-06-19 Circuit arrangement for a telephone with a speakerphone

Publications (2)

Publication Number Publication Date
ATA427879A ATA427879A (en) 1983-04-15
AT373111B true AT373111B (en) 1983-12-27

Family

ID=6042078

Family Applications (1)

Application Number Title Priority Date Filing Date
AT427879A AT373111B (en) 1978-06-19 1979-06-18 CIRCUIT ARRANGEMENT FOR A TELEPHONE WITH A HANDS-FREE UNIT

Country Status (3)

Country Link
AT (1) AT373111B (en)
BE (1) BE877077R (en)
DE (1) DE2826671C3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4536888A (en) * 1981-08-21 1985-08-20 Plantronics, Inc. Voice communication instrument system with line-powered receiver conditioning circuit
US4497980A (en) * 1983-06-16 1985-02-05 Itt Corporation Handsfree circuit for telephone instrument
GB8317706D0 (en) * 1983-06-29 1983-08-03 Standard Telephones Cables Ltd Telephone subsets
DE3407203A1 (en) * 1984-02-28 1985-08-29 Siemens AG, 1000 Berlin und 8000 München Telephone station with hands-free operation
DE3616314A1 (en) * 1986-05-13 1987-11-19 Krone Ag Telephone set with hands-free device

Also Published As

Publication number Publication date
DE2826671B2 (en) 1980-10-30
ATA427879A (en) 1983-04-15
BE877077R (en) 1979-12-19
DE2826671A1 (en) 1979-12-20
DE2826671C3 (en) 1981-08-06

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Legal Events

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