Noise mitigation and mode switching in communications...
Noise suppression circuit for switched telephone lines
Noise-cancelling handset
Noise-cancelling telephone handset
Noise/interference suppression system
Non coded information and companion data switching mechanism
Non-constant echo return loss for telephone terminal with...
Non-integer programmable counter
Non-intrusive signal quality assessment
Non-powered analog telephone line transmitter system
Non-reactive anti-sidetone network for a telephone set
Nonlinear device detection
Nonlinear processor for acoustic echo canceller
Notification enhancement system for telephone device
Notification system
Numeric and text paging with an integral plc modem