JPS58154961A - 秘匿通話方法 - Google Patents

秘匿通話方法

Info

Publication number
JPS58154961A
JPS58154961A JP57037626A JP3762682A JPS58154961A JP S58154961 A JPS58154961 A JP S58154961A JP 57037626 A JP57037626 A JP 57037626A JP 3762682 A JP3762682 A JP 3762682A JP S58154961 A JPS58154961 A JP S58154961A
Authority
JP
Japan
Prior art keywords
secret
telephone
dial
trunk
subscriber
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
JP57037626A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0156584B2 (enrdf_load_stackoverflow
Inventor
Shinichi Tsuchida
土田　伸一
Shigeki Tanaka
田中　重喜
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP57037626A priority Critical patent/JPS58154961A/ja
Publication of JPS58154961A publication Critical patent/JPS58154961A/ja
Publication of JPH0156584B2 publication Critical patent/JPH0156584B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP57037626A 1982-03-10 1982-03-10 秘匿通話方法 Granted JPS58154961A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57037626A JPS58154961A (ja) 1982-03-10 1982-03-10 秘匿通話方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57037626A JPS58154961A (ja) 1982-03-10 1982-03-10 秘匿通話方法

Publications (2)

Publication Number Publication Date
JPS58154961A true JPS58154961A (ja) 1983-09-14
JPH0156584B2 JPH0156584B2 (enrdf_load_stackoverflow) 1989-11-30

Family

ID=12502840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57037626A Granted JPS58154961A (ja) 1982-03-10 1982-03-10 秘匿通話方法

Country Status (1)

Country Link
JP (1) JPS58154961A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58170268A (ja) * 1982-03-31 1983-10-06 Nec Corp 局間秘話接続制御方式
US6759724B2 (en) 1999-04-13 2004-07-06 Agilent Technologies, Inc. Isolation of alpha silicon diode sensors through ion implantation

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5676646A (en) * 1979-11-07 1981-06-24 Crypto Ag Device for transmission control signal through speeh channel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5676646A (en) * 1979-11-07 1981-06-24 Crypto Ag Device for transmission control signal through speeh channel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58170268A (ja) * 1982-03-31 1983-10-06 Nec Corp 局間秘話接続制御方式
US6759724B2 (en) 1999-04-13 2004-07-06 Agilent Technologies, Inc. Isolation of alpha silicon diode sensors through ion implantation

Also Published As

Publication number Publication date
JPH0156584B2 (enrdf_load_stackoverflow) 1989-11-30

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