JPS56132854A - Special function control system of automatic switchboard - Google Patents

Special function control system of automatic switchboard

Info

Publication number
JPS56132854A
JPS56132854A JP3645780A JP3645780A JPS56132854A JP S56132854 A JPS56132854 A JP S56132854A JP 3645780 A JP3645780 A JP 3645780A JP 3645780 A JP3645780 A JP 3645780A JP S56132854 A JPS56132854 A JP S56132854A
Authority
JP
Japan
Prior art keywords
hotel
interface circuit
control unit
operation board
automatic switchboard
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
JP3645780A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6346626B2 (enrdf_load_stackoverflow
Inventor
Kazunori Fujita
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 JP3645780A priority Critical patent/JPS56132854A/ja
Publication of JPS56132854A publication Critical patent/JPS56132854A/ja
Publication of JPS6346626B2 publication Critical patent/JPS6346626B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
JP3645780A 1980-03-21 1980-03-21 Special function control system of automatic switchboard Granted JPS56132854A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3645780A JPS56132854A (en) 1980-03-21 1980-03-21 Special function control system of automatic switchboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3645780A JPS56132854A (en) 1980-03-21 1980-03-21 Special function control system of automatic switchboard

Publications (2)

Publication Number Publication Date
JPS56132854A true JPS56132854A (en) 1981-10-17
JPS6346626B2 JPS6346626B2 (enrdf_load_stackoverflow) 1988-09-16

Family

ID=12470344

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3645780A Granted JPS56132854A (en) 1980-03-21 1980-03-21 Special function control system of automatic switchboard

Country Status (1)

Country Link
JP (1) JPS56132854A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6346626B2 (enrdf_load_stackoverflow) 1988-09-16

Similar Documents

Publication Publication Date Title
JPS56132135A (en) Switching circuit for remote control system
DE3166605D1 (en) Current control circuit arrangements
JPS56132854A (en) Special function control system of automatic switchboard
DE3277090D1 (en) A power supply circuit
JPS544047A (en) Switching circuit
JPS53120308A (en) Automatic channel switching system
JPS5360506A (en) Circuit control system
JPS5348602A (en) Voice control system
JPS52132632A (en) Input/output control circuit
JPS5391508A (en) Transmission control system for sound signal
JPS5513570A (en) Automatic raising system of double central control units at trouble time
GB8405789D0 (en) Switching control circuit
JPS57113101A (en) Fault-output preventing circuit of control circuit
JPS57108911A (en) Clock signal control system
JPS5422074A (en) Switching control system
JPS53110313A (en) Auotmatic frequency control circuit with auotmatic frequency control signal transmission system state switched and changed automatically according to receiving state
JPS57108502A (en) Control circuit with auxiliary process variable
JPS542601A (en) Store-and-froward-exchange system
JPS56137422A (en) Input and output controlling system
JPS53109428A (en) Automatic clear circuit system
JPS5485606A (en) Push-button dial telephone set
JPS57204666A (en) Ringing signal controlling system
JPS52144241A (en) Circuit scanning switching system for auxiliary communication control unit
JPS51114097A (en) Synchronous follower
JPS5791057A (en) Connecting device for communication line