JPH01153764U - - Google Patents

Info

Publication number

JPH01153764U

JPH01153764U JP4931988U JP4931988U JPH01153764U JP H01153764 U JPH01153764 U JP H01153764U JP 4931988 U JP4931988 U JP 4931988U JP 4931988 U JP4931988 U JP 4931988U JP H01153764 U JPH01153764 U JP H01153764U

Authority

JP

Japan

Prior art keywords

telephone line

alarm

signal

security

monitoring

Prior art date

1988-04-14

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

Links

• Espacenet
• Global Dossier
• Discuss

• 238000012544 monitoring process Methods 0.000 claims description 5
• 238000012806 monitoring device Methods 0.000 claims description 3
• 230000005856 abnormality Effects 0.000 claims 3
• 238000001514 detection method Methods 0.000 claims 1
• 238000010586 diagram Methods 0.000 description 1
• 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1