JPS579156A - Connecting system for telephone device - Google Patents

Connecting system for telephone device

Info

Publication number
JPS579156A
JPS579156A JP8273880A JP8273880A JPS579156A JP S579156 A JPS579156 A JP S579156A JP 8273880 A JP8273880 A JP 8273880A JP 8273880 A JP8273880 A JP 8273880A JP S579156 A JPS579156 A JP S579156A
Authority
JP
Japan
Prior art keywords
extension
circuit
telephone device
connecting system
impedance circuit
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.)
Pending
Application number
JP8273880A
Other languages
Japanese (ja)
Inventor
Eiji Morikami
Takeo Oba
Hirozo Shintani
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.)
Iwatsu Electric Co Ltd
Original Assignee
Iwatsu Electric Co 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 Iwatsu Electric Co Ltd filed Critical Iwatsu Electric Co Ltd
Priority to JP8273880A priority Critical patent/JPS579156A/en
Publication of JPS579156A publication Critical patent/JPS579156A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
    • H04Q5/24—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange for two-party-line systems
    • H04Q5/245—Circuit arrangements in which for one subscriber low frequency speech and/or signalling signals proceed on the line, while for the other subscriber the low frequency speech and/or signalling signals are modulated upon a high frequency carrier signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

PURPOSE:To prevent the deterioration of filtering characteristic of a filter, by connecting each telephone set and line via an impedance circuit. CONSTITUTION:An LPF3, channel circuit 4 and handset 5 are connected to an extension 2. An HPF6, transmission/reception circuit 7 and control circuit 8 are connected to the extension 2. The characteristics of the filters 3, 6 can be compensated regardless of the variation of number of telephone sets connected to the extension 2, by connecting an impedance circuit 15 to the connection with the extension 2.
JP8273880A 1980-06-20 1980-06-20 Connecting system for telephone device Pending JPS579156A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8273880A JPS579156A (en) 1980-06-20 1980-06-20 Connecting system for telephone device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8273880A JPS579156A (en) 1980-06-20 1980-06-20 Connecting system for telephone device

Publications (1)

Publication Number Publication Date
JPS579156A true JPS579156A (en) 1982-01-18

Family

ID=13782749

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8273880A Pending JPS579156A (en) 1980-06-20 1980-06-20 Connecting system for telephone device

Country Status (1)

Country Link
JP (1) JPS579156A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6014529A (en) * 1983-07-05 1985-01-25 Matsushita Electric Ind Co Ltd Transmission and reception system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6014529A (en) * 1983-07-05 1985-01-25 Matsushita Electric Ind Co Ltd Transmission and reception system
JPH0447497B2 (en) * 1983-07-05 1992-08-04 Matsushita Electric Ind Co Ltd

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