BE877076A - SPEAKER INTERCOMMUNICATION SYSTEMS - Google Patents

SPEAKER INTERCOMMUNICATION SYSTEMS

Info

Publication number
BE877076A
BE877076A BE2/57880A BE2057880A BE877076A BE 877076 A BE877076 A BE 877076A BE 2/57880 A BE2/57880 A BE 2/57880A BE 2057880 A BE2057880 A BE 2057880A BE 877076 A BE877076 A BE 877076A
Authority
BE
Belgium
Prior art keywords
speaker
intercommunication systems
intercommunication
systems
speaker intercommunication
Prior art date
Application number
BE2/57880A
Other languages
French (fr)
Inventor
M Slawik
H Wiedmann
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 BE877076A publication Critical patent/BE877076A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
BE2/57880A 1978-06-19 1979-06-19 SPEAKER INTERCOMMUNICATION SYSTEMS BE877076A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782826673 DE2826673A1 (en) 1978-06-19 1978-06-19 Voice amplifying circuit for telephone set - has lockable key setting gain to max. to avoid feedback in noisy rooms

Publications (1)

Publication Number Publication Date
BE877076A true BE877076A (en) 1979-12-19

Family

ID=6042080

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2/57880A BE877076A (en) 1978-06-19 1979-06-19 SPEAKER INTERCOMMUNICATION SYSTEMS

Country Status (2)

Country Link
BE (1) BE877076A (en)
DE (1) DE2826673A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3507483A1 (en) * 1985-03-02 1986-09-04 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt TERMINAL OF A TELECOMMUNICATION SYSTEM

Also Published As

Publication number Publication date
DE2826673A1 (en) 1979-12-20

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