CA982715A - Telephone subset circuit - Google Patents

Telephone subset circuit

Info

Publication number
CA982715A
CA982715A CA178,864A CA178864A CA982715A CA 982715 A CA982715 A CA 982715A CA 178864 A CA178864 A CA 178864A CA 982715 A CA982715 A CA 982715A
Authority
CA
Canada
Prior art keywords
telephone subset
subset circuit
circuit
telephone
subset
Prior art date
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.)
Expired
Application number
CA178,864A
Other languages
English (en)
Other versions
CA178864S (en
Inventor
Camilo M. Tabalba
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ITT Canada Ltd
Original Assignee
ITT Canada Ltd
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 ITT Canada Ltd filed Critical ITT Canada Ltd
Application granted granted Critical
Publication of CA982715A publication Critical patent/CA982715A/en
Expired legal-status Critical Current

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
    • H04M1/6025—Substation equipment, e.g. for use by subscribers including speech amplifiers implemented as integrated speech networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Interface Circuits In Exchanges (AREA)
CA178,864A 1972-08-22 1973-08-15 Telephone subset circuit Expired CA982715A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3908372A GB1406663A (en) 1972-08-22 1972-08-22 Telphone subset circuits

Publications (1)

Publication Number Publication Date
CA982715A true CA982715A (en) 1976-01-27

Family

ID=10407538

Family Applications (1)

Application Number Title Priority Date Filing Date
CA178,864A Expired CA982715A (en) 1972-08-22 1973-08-15 Telephone subset circuit

Country Status (16)

Country Link
US (1) US3899643A (fr)
JP (1) JPS5524299B2 (fr)
AR (1) AR198002A1 (fr)
BE (1) BE803863A (fr)
BR (1) BR7306478D0 (fr)
CA (1) CA982715A (fr)
CH (1) CH566095A5 (fr)
DE (1) DE2340371A1 (fr)
ES (1) ES418060A1 (fr)
FR (1) FR2197286B1 (fr)
GB (1) GB1406663A (fr)
HK (1) HK38876A (fr)
IT (1) IT992796B (fr)
PL (1) PL86991B1 (fr)
SU (1) SU592380A3 (fr)
ZA (1) ZA734369B (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002852A (en) * 1975-07-08 1977-01-11 International Telephone And Telegraph Corporation Electronic telephone network
US3963876A (en) * 1975-06-30 1976-06-15 Bell Telephone Laboratories, Incorporated Amplifier circuit for increasing transmit and receive levels in a telephone hybrid network
CA1056970A (fr) * 1977-01-10 1979-06-19 Northern Telecom Limited Reseau electronique pour poste telephonique
US4178484A (en) * 1977-06-27 1979-12-11 Vincent Ogden W Long line telephone system with an amplifying substation
US4326109A (en) * 1980-04-11 1982-04-20 Northern Telecom Limited Apparatus for coupling a two-way transmission path to a one-way transmitting path and a one-way receiving path
CA1186826A (fr) * 1981-03-18 1985-05-07 Jin H. Yun Telephone a haut-parleur
US4414432A (en) * 1981-09-21 1983-11-08 Zenith Radio Corporation Pseudo-full duplex television/telephone loudspeaker system
JPS58109749U (ja) * 1982-01-20 1983-07-26 株式会社リコー 容器
JPS59500344A (ja) * 1982-03-04 1984-03-01 エステイーシー・ピーエルシー 利得調整回路
WO1983003176A1 (fr) * 1982-03-04 1983-09-15 Blomley, Peter, Fred Circuits ecreteurs de formes d'ondes
FR2538661A1 (fr) * 1982-12-28 1984-06-29 Thomson Csf Circuit electrique assurant les fonctions de base d'un poste telephonique d'abonne
GB2142509A (en) * 1983-06-28 1985-01-16 Emhart Ind Audio amplifier
NL8304312A (nl) * 1983-12-15 1985-07-01 Philips Nv Telefooncircuit met klasse-b versterker.
US4577310A (en) * 1984-05-16 1986-03-18 Tie/Communications, Inc. Station interface for digital electronic telephone switching system having centralized digital audio processor
JPH039410Y2 (fr) * 1984-09-21 1991-03-08
JP3022807B2 (ja) 1997-05-30 2000-03-21 埼玉日本電気株式会社 携帯電話装置
US7164319B2 (en) * 2005-04-29 2007-01-16 Triquint Semiconductor, Inc. Power amplifier with multi mode gain circuit
CN103661153A (zh) * 2012-09-11 2014-03-26 上海博泰悦臻电子设备制造有限公司 车载设备及车载usb接口终端设备

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA862229A (en) * 1969-12-01 1971-01-26 C. J. Cowpland Michael Equalizing and anti-sidetone telephone circuit
BE759917A (fr) * 1969-12-08 1971-05-17 Western Electric Co Reseau a frequence acoustique
GB1350205A (en) * 1970-07-24 1974-04-18 Post Office Telephone subscribers instrument circuits
NL7115947A (fr) * 1971-11-19 1973-05-22
BE792329A (fr) * 1971-12-09 1973-06-06 Int Standard Electric Corp Circuit de transmission electronique pour poste telephonique
US3823273A (en) * 1971-12-17 1974-07-09 Gte Automatic Electric Lab Inc Subscriber's telephone circuit

Also Published As

Publication number Publication date
SU592380A3 (ru) 1978-02-05
ZA734369B (en) 1974-06-26
AU5895873A (en) 1975-02-06
JPS5524299B2 (fr) 1980-06-27
PL86991B1 (fr) 1976-06-30
FR2197286B1 (fr) 1977-02-25
BE803863A (fr) 1974-02-22
ES418060A1 (es) 1976-05-01
GB1406663A (en) 1975-09-17
BR7306478D0 (pt) 1974-07-11
CH566095A5 (fr) 1975-08-29
US3899643A (en) 1975-08-12
DE2340371A1 (de) 1974-02-28
HK38876A (en) 1976-07-02
FR2197286A1 (fr) 1974-03-22
IT992796B (it) 1975-09-30
AR198002A1 (es) 1974-05-24
JPS4960607A (fr) 1974-06-12

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