1
Harold B Noyes: Modem with power-off ring detection. Hewlett Packard Company, James M Williams, April 7, 1987: US04656318 (53 worldwide citation)

A modem which can detect an incoming call and provide an indication of the incoming call to a host computer while the power to the modem is turned off, comprising a switchable power supply that can be turned on and off by a remote input from the host computer, a ring detector circuit that monitors f ...


2
Noyes Harold B: Modem with power-off ring detection.. Hewlett Packard Co, December 10, 1986: EP0204155-A1 (5 worldwide citation)

A modem (10) which can detect an incoming call and provide an indication of the incoming call to a host computer (11) while the power to the modem is turned off, comprising a switchable power supply (15) that can be turned on and off by a remote input from the host computer, a ring detector circuit ...


3
Noyes Harold B: Modem pouvant detecter les appels meme lorsque hors tension, Modem with power-off ring detection. Hewlett Packard Company, SIM & MCBURNEY, December 6, 1988: CA1246258

ABSTRACT A modem which can detect an incoming call and provide anindication of the incoming call to a host computer while thepower to the modem is turned off, comprising a switchable powersupply that can be turned on and off by a remote input from thehost computer, a ring detector circuit that monit ...