Method and apparatus for selecting an alert mode based on...
Method and apparatus for sensing current
Method and apparatus for signal detection
Method and apparatus for speed dialing via one-touch and two-tou
Method and apparatus for switch hook detection
Method and apparatus for the secure communication of data
Method and apparatus for transmitting address changes
Method and arrangement for filtering of signals
Method and circuit for detecting ring and caller-ID signals
Method and circuit for failsafe switch-hook detection during fau
Method and device for decoding a sequence of signals
Method and device for detecting a ringtrip
Method and device for detecting the presence of a periodic signa
Method and device for distinguishing among a plurality of...
Method and modem circuit for determining connection status...
Method and structure for detecting a customer premises equipment
Method and system for audibly announcing an indication of an...
Method and system for called party to provide indication...
Method and system for detecting at a selected station an alertin
Method and system for detecting the state of dialing a...