JPS5744074B2 - - Google Patents

Info

Publication number
JPS5744074B2
JPS5744074B2 JP51047047A JP4704776A JPS5744074B2 JP S5744074 B2 JPS5744074 B2 JP S5744074B2 JP 51047047 A JP51047047 A JP 51047047A JP 4704776 A JP4704776 A JP 4704776A JP S5744074 B2 JPS5744074 B2 JP S5744074B2
Authority
JP
Japan
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.)
Expired
Application number
JP51047047A
Other languages
Japanese (ja)
Other versions
JPS52130221A (en
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 filed Critical
Priority to JP4704776A priority Critical patent/JPS52130221A/ja
Publication of JPS52130221A publication Critical patent/JPS52130221A/ja
Publication of JPS5744074B2 publication Critical patent/JPS5744074B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Interface Circuits In Exchanges (AREA)
JP4704776A 1976-04-24 1976-04-24 Ringing detection circuit in telephone exchanger Granted JPS52130221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4704776A JPS52130221A (en) 1976-04-24 1976-04-24 Ringing detection circuit in telephone exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4704776A JPS52130221A (en) 1976-04-24 1976-04-24 Ringing detection circuit in telephone exchanger

Publications (2)

Publication Number Publication Date
JPS52130221A JPS52130221A (en) 1977-11-01
JPS5744074B2 true JPS5744074B2 (enrdf_load_html_response) 1982-09-18

Family

ID=12764244

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4704776A Granted JPS52130221A (en) 1976-04-24 1976-04-24 Ringing detection circuit in telephone exchanger

Country Status (1)

Country Link
JP (1) JPS52130221A (enrdf_load_html_response)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5484909A (en) * 1977-12-13 1979-07-06 Fujitsu Ltd Signal detection system
JPS6010896A (ja) * 1983-06-29 1985-01-21 Matsushita Electric Ind Co Ltd 局線回路

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5118407A (ja) * 1974-07-10 1976-02-14 Nippon Electric Co Daiyaruparusushuseikairo

Also Published As

Publication number Publication date
JPS52130221A (en) 1977-11-01

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