JPS56149890A - Trunk circuit of automatic telephone switchboard - Google Patents

Trunk circuit of automatic telephone switchboard

Info

Publication number
JPS56149890A
JPS56149890A JP5309680A JP5309680A JPS56149890A JP S56149890 A JPS56149890 A JP S56149890A JP 5309680 A JP5309680 A JP 5309680A JP 5309680 A JP5309680 A JP 5309680A JP S56149890 A JPS56149890 A JP S56149890A
Authority
JP
Japan
Prior art keywords
transistor
diode
station
line
constituting
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
JP5309680A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6228914B2 (enrdf_load_stackoverflow
Inventor
Mitsuo Suzuki
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP5309680A priority Critical patent/JPS56149890A/ja
Publication of JPS56149890A publication Critical patent/JPS56149890A/ja
Publication of JPS6228914B2 publication Critical patent/JPS6228914B2/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)
  • Interface Circuits In Exchanges (AREA)
JP5309680A 1980-04-22 1980-04-22 Trunk circuit of automatic telephone switchboard Granted JPS56149890A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5309680A JPS56149890A (en) 1980-04-22 1980-04-22 Trunk circuit of automatic telephone switchboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5309680A JPS56149890A (en) 1980-04-22 1980-04-22 Trunk circuit of automatic telephone switchboard

Publications (2)

Publication Number Publication Date
JPS56149890A true JPS56149890A (en) 1981-11-19
JPS6228914B2 JPS6228914B2 (enrdf_load_stackoverflow) 1987-06-23

Family

ID=12933243

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5309680A Granted JPS56149890A (en) 1980-04-22 1980-04-22 Trunk circuit of automatic telephone switchboard

Country Status (1)

Country Link
JP (1) JPS56149890A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6228914B2 (enrdf_load_stackoverflow) 1987-06-23

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