JPS607255A - 秘話機能付親子電話装置 - Google Patents

秘話機能付親子電話装置

Info

Publication number
JPS607255A
JPS607255A JP58114374A JP11437483A JPS607255A JP S607255 A JPS607255 A JP S607255A JP 58114374 A JP58114374 A JP 58114374A JP 11437483 A JP11437483 A JP 11437483A JP S607255 A JPS607255 A JP S607255A
Authority
JP
Japan
Prior art keywords
telephone
circuit
telephone set
transfer
trunk line
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
JP58114374A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6356744B2 (enrdf_load_stackoverflow
Inventor
Masaru Kudo
賢 工藤
Minoru Sasai
笹井　実
Katsumi Fujikawa
藤川　克美
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.)
Nippon Telegraph and Telephone Corp
Kanda Tsushin Kogyo Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Kanda Tsushin Kogyo 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 Nippon Telegraph and Telephone Corp, Kanda Tsushin Kogyo Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP58114374A priority Critical patent/JPS607255A/ja
Publication of JPS607255A publication Critical patent/JPS607255A/ja
Publication of JPS6356744B2 publication Critical patent/JPS6356744B2/ja
Granted 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
    • H04M1/715—Substation extension arrangements using two or more extensions per line

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP58114374A 1983-06-27 1983-06-27 秘話機能付親子電話装置 Granted JPS607255A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58114374A JPS607255A (ja) 1983-06-27 1983-06-27 秘話機能付親子電話装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58114374A JPS607255A (ja) 1983-06-27 1983-06-27 秘話機能付親子電話装置

Publications (2)

Publication Number Publication Date
JPS607255A true JPS607255A (ja) 1985-01-16
JPS6356744B2 JPS6356744B2 (enrdf_load_stackoverflow) 1988-11-09

Family

ID=14636092

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58114374A Granted JPS607255A (ja) 1983-06-27 1983-06-27 秘話機能付親子電話装置

Country Status (1)

Country Link
JP (1) JPS607255A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6356744B2 (enrdf_load_stackoverflow) 1988-11-09

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