JPS5225507A - Data transfer expansion system to transit board - Google Patents

Data transfer expansion system to transit board

Info

Publication number
JPS5225507A
JPS5225507A JP10122575A JP10122575A JPS5225507A JP S5225507 A JPS5225507 A JP S5225507A JP 10122575 A JP10122575 A JP 10122575A JP 10122575 A JP10122575 A JP 10122575A JP S5225507 A JPS5225507 A JP S5225507A
Authority
JP
Japan
Prior art keywords
data transfer
expansion system
transit board
transit
transfer expansion
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
JP10122575A
Other languages
English (en)
Japanese (ja)
Inventor
Tatsumasa Onuma
Hidetaka Yamashita
Koshu Yoshizaki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP10122575A priority Critical patent/JPS5225507A/ja
Priority to AU17008/76A priority patent/AU497491B2/en
Priority to CA259,503A priority patent/CA1058764A/fr
Publication of JPS5225507A publication Critical patent/JPS5225507A/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
    • H04M3/62—Keyboard equipment

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP10122575A 1975-08-22 1975-08-22 Data transfer expansion system to transit board Pending JPS5225507A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP10122575A JPS5225507A (en) 1975-08-22 1975-08-22 Data transfer expansion system to transit board
AU17008/76A AU497491B2 (en) 1975-08-22 1976-08-20 Serial data reception system
CA259,503A CA1058764A (fr) 1975-08-22 1976-08-20 Systeme de reception serielle des donnees

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10122575A JPS5225507A (en) 1975-08-22 1975-08-22 Data transfer expansion system to transit board

Publications (1)

Publication Number Publication Date
JPS5225507A true JPS5225507A (en) 1977-02-25

Family

ID=14294943

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10122575A Pending JPS5225507A (en) 1975-08-22 1975-08-22 Data transfer expansion system to transit board

Country Status (3)

Country Link
JP (1) JPS5225507A (fr)
AU (1) AU497491B2 (fr)
CA (1) CA1058764A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53120206A (en) * 1977-03-29 1978-10-20 Nec Corp Attendant board control system for electronic switchboard
JPS53129908A (en) * 1977-04-19 1978-11-13 Fujitsu Ltd Terminal control system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS483386U (fr) * 1971-05-22 1973-01-16
JPS492778A (fr) * 1972-03-13 1974-01-11

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS483386U (fr) * 1971-05-22 1973-01-16
JPS492778A (fr) * 1972-03-13 1974-01-11

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53120206A (en) * 1977-03-29 1978-10-20 Nec Corp Attendant board control system for electronic switchboard
JPS53129908A (en) * 1977-04-19 1978-11-13 Fujitsu Ltd Terminal control system

Also Published As

Publication number Publication date
AU497491B2 (en) 1978-12-14
CA1058764A (fr) 1979-07-17

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