JPS572189A - Trunk switching circuit - Google Patents

Trunk switching circuit

Info

Publication number
JPS572189A
JPS572189A JP7421580A JP7421580A JPS572189A JP S572189 A JPS572189 A JP S572189A JP 7421580 A JP7421580 A JP 7421580A JP 7421580 A JP7421580 A JP 7421580A JP S572189 A JPS572189 A JP S572189A
Authority
JP
Japan
Prior art keywords
sub
talking
call
switching circuit
trunk
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
JP7421580A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6223951B2 (enrdf_load_stackoverflow
Inventor
Takashi Hasumi
Ryoichi Himeno
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.)
Nippon Telegraph and Telephone Corp
Oki Electric Industry Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Oki Electric Industry 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 Nippon Telegraph and Telephone Corp, Oki Electric Industry Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP7421580A priority Critical patent/JPS572189A/ja
Publication of JPS572189A publication Critical patent/JPS572189A/ja
Publication of JPS6223951B2 publication Critical patent/JPS6223951B2/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)
  • Electronic Switches (AREA)
JP7421580A 1980-06-04 1980-06-04 Trunk switching circuit Granted JPS572189A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7421580A JPS572189A (en) 1980-06-04 1980-06-04 Trunk switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7421580A JPS572189A (en) 1980-06-04 1980-06-04 Trunk switching circuit

Publications (2)

Publication Number Publication Date
JPS572189A true JPS572189A (en) 1982-01-07
JPS6223951B2 JPS6223951B2 (enrdf_load_stackoverflow) 1987-05-26

Family

ID=13540743

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7421580A Granted JPS572189A (en) 1980-06-04 1980-06-04 Trunk switching circuit

Country Status (1)

Country Link
JP (1) JPS572189A (enrdf_load_stackoverflow)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5267504A (en) * 1975-12-02 1977-06-04 Oki Electric Ind Co Ltd Speaking current supply and supervision system
JPS53137608A (en) * 1977-05-07 1978-12-01 Fujitsu Ltd Common use system of trunks for call waiting meeting communication

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5267504A (en) * 1975-12-02 1977-06-04 Oki Electric Ind Co Ltd Speaking current supply and supervision system
JPS53137608A (en) * 1977-05-07 1978-12-01 Fujitsu Ltd Common use system of trunks for call waiting meeting communication

Also Published As

Publication number Publication date
JPS6223951B2 (enrdf_load_stackoverflow) 1987-05-26

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