Semi-floating AC/DC active termination circuit with current sink
Semiconductor integrated device
Semiconductor subscriber line interface circuit with enhanced su
Separation of ring detection functions across isolation...
Separation of ring detection functions across isolation...
Series equipment with DC line hold transfer
Side tone correction circuit
Sign bit integrator and method
Signal circuit protector device for consumer use
Signal coupler using low voltage filtering
Signal splitter with test relays on auxiliary circuit board...
Signaling device and system
Silent ringing with reduced device sizes
Single transformer hybrid system and method
Single-ended loop test circuitry in a central office DSL modem
Solid state isolation device using opto-isolators
Solid state primary telephone protector
Solid state telephone protector module
Solid state telephone protector module
Speech amplifier-resident mechanism for controllably...