JPH0228165U - - Google Patents

Info

Publication number

JPH0228165U

JPH0228165U JP10716788U JP10716788U JPH0228165U JP H0228165 U JPH0228165 U JP H0228165U JP 10716788 U JP10716788 U JP 10716788U JP 10716788 U JP10716788 U JP 10716788U JP H0228165 U JPH0228165 U JP H0228165U

Authority

JP

Japan

Prior art keywords

extension

telephone

pulse dial

line

detection circuit

Prior art date

1988-08-12

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

• 238000001514 detection method Methods 0.000 claims description 5
• 230000015572 biosynthetic process Effects 0.000 claims description 3
• 238000003786 synthesis reaction Methods 0.000 claims description 3
• 238000010586 diagram Methods 0.000 description 2
• 230000005540 biological transmission Effects 0.000 description 1
• 239000011159 matrix material Substances 0.000 description 1