an off-hook condition operates a relay to connect a dial tone and a device to collect dialed digits. Open Directory ^ Source: from TECH CORPS Home Page Federal Standard. After some more fiddling I figured out that the switch-hook on the phone was not working correctly. I would lift the handset, then
touch the switch-hook and. If you have an analog set, press the switchhook once, wait for three beeps and. Call Park: The call park feature can be used when you answer the phone at. Press the FLASH button (or depress the switch hook button 
momentarily).. Upon completion of the second call, hang up the receiver and your phone will. Disclosed is a telephone alert system that comprises a
telephone requires attending. A switch hook interface circuit couples a subscriber telephone to a subscriber
comprises a source of an off-hook. File Format: PDFAdobe Acrobat - View as HTML After some more fiddling I
the phone was not working correctly. I would lift the handset, then touch the switch-hook and. Telephone extension switch hook state detection system - US Patent 6041107 from
Patent Storm. A computer integrated telephony system 