JPH0216645U - - Google Patents

Info

Publication number

JPH0216645U

JPH0216645U JP9534988U JP9534988U JPH0216645U JP H0216645 U JPH0216645 U JP H0216645U JP 9534988 U JP9534988 U JP 9534988U JP 9534988 U JP9534988 U JP 9534988U JP H0216645 U JPH0216645 U JP H0216645U

Authority

JP

Japan

Prior art keywords

timer

central office

telephone

office exchange

time

Prior art date

1988-07-18

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

• 230000005540 biological transmission Effects 0.000 description 1
• 238000001514 detection method Methods 0.000 description 1
• 238000010586 diagram Methods 0.000 description 1