JPS57210761A - Telephone exchanger - Google Patents

Telephone exchanger

Info

Publication number
JPS57210761A
JPS57210761A JP9510781A JP9510781A JPS57210761A JP S57210761 A JPS57210761 A JP S57210761A JP 9510781 A JP9510781 A JP 9510781A JP 9510781 A JP9510781 A JP 9510781A JP S57210761 A JPS57210761 A JP S57210761A
Authority
JP
Japan
Prior art keywords
output
microcomputer
registers
caller
exchanger
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
JP9510781A
Other languages
Japanese (ja)
Inventor
Taro Matsui
Junya Ishizaki
Tsutomu Kunida
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 JP9510781A priority Critical patent/JPS57210761A/en
Publication of JPS57210761A publication Critical patent/JPS57210761A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

PURPOSE:To perform interpretation simply, by temporarily storing the telephone number and the number of times of pushing of a push button type and directly using the content with a microcomputer, in an exchanger using the microcomputer for a market section. CONSTITUTION:When a caller hooks on, the caller is connected to an outgoing register of an exchanger and when the caller transmits the telephone number with push buttons, the number is applied to an input 110 of a frequency converter and a push tone decoder 111 discriminates the combination of frequency components of 12 kinds and generates an output. The output is converted into a 4-bit output being 1,2,4,8 code at an encoder 112 and its output is sequentially stored in registers 115-118. A control circuit 113 controls sequential reading to the registers based on the number of times of pushing obtained from a number of times counter 114. The content of the registers 115-118 and a counter 114 is directly supplied to the microcomputer for selective control.
JP9510781A 1981-06-19 1981-06-19 Telephone exchanger Pending JPS57210761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9510781A JPS57210761A (en) 1981-06-19 1981-06-19 Telephone exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9510781A JPS57210761A (en) 1981-06-19 1981-06-19 Telephone exchanger

Publications (1)

Publication Number Publication Date
JPS57210761A true JPS57210761A (en) 1982-12-24

Family

ID=14128634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9510781A Pending JPS57210761A (en) 1981-06-19 1981-06-19 Telephone exchanger

Country Status (1)

Country Link
JP (1) JPS57210761A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49119506A (en) * 1973-03-15 1974-11-15

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49119506A (en) * 1973-03-15 1974-11-15

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