JPS6337547B2 - - Google Patents

Info

Publication number
JPS6337547B2
JPS6337547B2 JP14797383A JP14797383A JPS6337547B2 JP S6337547 B2 JPS6337547 B2 JP S6337547B2 JP 14797383 A JP14797383 A JP 14797383A JP 14797383 A JP14797383 A JP 14797383A JP S6337547 B2 JPS6337547 B2 JP S6337547B2
Authority
JP
Japan
Prior art keywords
circuit
signal
office line
called party
relay
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
JP14797383A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6039970A (ja
Inventor
Hiroshi Matsuda
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.)
NITSUTSUKO KK
Original Assignee
NITSUTSUKO KK
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 NITSUTSUKO KK filed Critical NITSUTSUKO KK
Priority to JP14797383A priority Critical patent/JPS6039970A/ja
Publication of JPS6039970A publication Critical patent/JPS6039970A/ja
Publication of JPS6337547B2 publication Critical patent/JPS6337547B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP14797383A 1983-08-15 1983-08-15 極性反転検出回路 Granted JPS6039970A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14797383A JPS6039970A (ja) 1983-08-15 1983-08-15 極性反転検出回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14797383A JPS6039970A (ja) 1983-08-15 1983-08-15 極性反転検出回路

Publications (2)

Publication Number Publication Date
JPS6039970A JPS6039970A (ja) 1985-03-02
JPS6337547B2 true JPS6337547B2 (no) 1988-07-26

Family

ID=15442285

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14797383A Granted JPS6039970A (ja) 1983-08-15 1983-08-15 極性反転検出回路

Country Status (1)

Country Link
JP (1) JPS6039970A (no)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61131953A (ja) * 1984-11-30 1986-06-19 Fujitsu Ltd 極性反転検出方式
JPS61224551A (ja) * 1985-03-28 1986-10-06 Nitsuko Corp 非常通報装置におけるメツセ−ジ終了判断方式
JPS61267494A (ja) * 1985-05-22 1986-11-27 Matsushita Electric Ind Co Ltd 構内電子交換機
JPS62207057A (ja) * 1986-03-07 1987-09-11 Nec Corp 網制御装置
JPH01209845A (ja) * 1988-02-17 1989-08-23 Rohm Co Ltd 電話回線の極性反転検出装置

Also Published As

Publication number Publication date
JPS6039970A (ja) 1985-03-02

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