JPS58121459U - 緊急通話保護回路 - Google Patents

緊急通話保護回路

Info

Publication number
JPS58121459U
JPS58121459U JP1647482U JP1647482U JPS58121459U JP S58121459 U JPS58121459 U JP S58121459U JP 1647482 U JP1647482 U JP 1647482U JP 1647482 U JP1647482 U JP 1647482U JP S58121459 U JPS58121459 U JP S58121459U
Authority
JP
Japan
Prior art keywords
emergency call
protection circuit
call protection
switch circuit
circuit
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
JP1647482U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0233419Y2 (enrdf_load_stackoverflow
Inventor
孝一 山口
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
Original Assignee
Nippon Telegraph and Telephone Corp
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 filed Critical Nippon Telegraph and Telephone Corp
Priority to JP1647482U priority Critical patent/JPS58121459U/ja
Publication of JPS58121459U publication Critical patent/JPS58121459U/ja
Application granted granted Critical
Publication of JPH0233419Y2 publication Critical patent/JPH0233419Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Meter Arrangements (AREA)
JP1647482U 1982-02-10 1982-02-10 緊急通話保護回路 Granted JPS58121459U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1647482U JPS58121459U (ja) 1982-02-10 1982-02-10 緊急通話保護回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1647482U JPS58121459U (ja) 1982-02-10 1982-02-10 緊急通話保護回路

Publications (2)

Publication Number Publication Date
JPS58121459U true JPS58121459U (ja) 1983-08-18
JPH0233419Y2 JPH0233419Y2 (enrdf_load_stackoverflow) 1990-09-07

Family

ID=30028839

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1647482U Granted JPS58121459U (ja) 1982-02-10 1982-02-10 緊急通話保護回路

Country Status (1)

Country Link
JP (1) JPS58121459U (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPH0233419Y2 (enrdf_load_stackoverflow) 1990-09-07

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