JPS57206151A - Line circuit trunk of telephone exchange - Google Patents

Line circuit trunk of telephone exchange

Info

Publication number
JPS57206151A
JPS57206151A JP9181181A JP9181181A JPS57206151A JP S57206151 A JPS57206151 A JP S57206151A JP 9181181 A JP9181181 A JP 9181181A JP 9181181 A JP9181181 A JP 9181181A JP S57206151 A JPS57206151 A JP S57206151A
Authority
JP
Japan
Prior art keywords
relay
telephone
call signal
works
line 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.)
Granted
Application number
JP9181181A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6332307B2 (enrdf_load_stackoverflow
Inventor
Katsuaki Fuji
Mitsuo Aoki
Yuji Hamada
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP9181181A priority Critical patent/JPS57206151A/ja
Publication of JPS57206151A publication Critical patent/JPS57206151A/ja
Publication of JPS6332307B2 publication Critical patent/JPS6332307B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
JP9181181A 1981-06-15 1981-06-15 Line circuit trunk of telephone exchange Granted JPS57206151A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9181181A JPS57206151A (en) 1981-06-15 1981-06-15 Line circuit trunk of telephone exchange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9181181A JPS57206151A (en) 1981-06-15 1981-06-15 Line circuit trunk of telephone exchange

Publications (2)

Publication Number Publication Date
JPS57206151A true JPS57206151A (en) 1982-12-17
JPS6332307B2 JPS6332307B2 (enrdf_load_stackoverflow) 1988-06-29

Family

ID=14037007

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9181181A Granted JPS57206151A (en) 1981-06-15 1981-06-15 Line circuit trunk of telephone exchange

Country Status (1)

Country Link
JP (1) JPS57206151A (enrdf_load_stackoverflow)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55104163A (en) * 1979-02-02 1980-08-09 Hitachi Ltd Transmission circuit for callout signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55104163A (en) * 1979-02-02 1980-08-09 Hitachi Ltd Transmission circuit for callout signal

Also Published As

Publication number Publication date
JPS6332307B2 (enrdf_load_stackoverflow) 1988-06-29

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