JPS5441003A - Night switching system of telephone line - Google Patents

Night switching system of telephone line

Info

Publication number
JPS5441003A
JPS5441003A JP10807077A JP10807077A JPS5441003A JP S5441003 A JPS5441003 A JP S5441003A JP 10807077 A JP10807077 A JP 10807077A JP 10807077 A JP10807077 A JP 10807077A JP S5441003 A JPS5441003 A JP S5441003A
Authority
JP
Japan
Prior art keywords
telephone line
switching system
night switching
night
telephone set
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
JP10807077A
Other languages
Japanese (ja)
Inventor
Tatsuya Kato
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 JP10807077A priority Critical patent/JPS5441003A/en
Publication of JPS5441003A publication Critical patent/JPS5441003A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/71—Substation extension arrangements

Abstract

PURPOSE:To switch automatically the line to a night telephone set at night by providing a photo detector element in the telephone set.
JP10807077A 1977-09-08 1977-09-08 Night switching system of telephone line Pending JPS5441003A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10807077A JPS5441003A (en) 1977-09-08 1977-09-08 Night switching system of telephone line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10807077A JPS5441003A (en) 1977-09-08 1977-09-08 Night switching system of telephone line

Publications (1)

Publication Number Publication Date
JPS5441003A true JPS5441003A (en) 1979-03-31

Family

ID=14475110

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10807077A Pending JPS5441003A (en) 1977-09-08 1977-09-08 Night switching system of telephone line

Country Status (1)

Country Link
JP (1) JPS5441003A (en)

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