Long-haul communications
general/communication-circuits
Quad digital audio processor
general/communication-circuits
Leased line
Private telecommunications circuit
general/communication-circuits
Single-ended signaling
Signal transmission mechanism in wires
general/communication-circuits
Foster–Seeley discriminator
Type of FM detector circuit
general/communication-circuits
Quad digital audio processor
general/communication-circuits
Carrier wave
Sinusoidal wave without any modulation
general/communication-circuits
Frequency multiplier
Electronic circuit
general/communication-circuits
Carrier wave
Sinusoidal wave without any modulation
general/communication-circuits
Balanced line
Electrical circuit with two conductors of equal impedance
general/communication-circuits
Frequency multiplier
Electronic circuit
general/communication-circuits
Ringdown
general/communication-circuits
Long-haul communications
general/communication-circuits
Long-haul communications
general/communication-circuits
Frequency multiplier
Electronic circuit
general/communication-circuits
Trunking
Means of sharing telecommunications resources
general/communication-circuits
Carrier wave
Sinusoidal wave without any modulation
general/communication-circuits
Duplex (telecommunications)
Communication flowing simultaneously in both directions
general/communication-circuits
Leased line
Private telecommunications circuit
general/communication-circuits
Single-ended signaling
Signal transmission mechanism in wires
general/communication-circuits
Quad digital audio processor
general/communication-circuits
Off-premises extension
general/communication-circuits
Leased line
Private telecommunications circuit
general/communication-circuits
Single-ended signaling
Signal transmission mechanism in wires
general/communication-circuits
Frequency multiplier
Electronic circuit
general/communication-circuits
Single-ended signaling
Signal transmission mechanism in wires
general/communication-circuits
Carrier wave
Sinusoidal wave without any modulation
general/communication-circuits
Long-haul communications
general/communication-circuits
Leased line
Private telecommunications circuit
general/communication-circuits
Quad digital audio processor
general/communication-circuits
Frequency multiplier
Electronic circuit
general/communication-circuits
Single-ended signaling
Signal transmission mechanism in wires
general/communication-circuits
Leased line
Private telecommunications circuit
general/communication-circuits
Long-haul communications
general/communication-circuits
Carrier wave
Sinusoidal wave without any modulation
general/communication-circuits
Quad digital audio processor
general/communication-circuits
Via Net Loss
general/communication-circuits