Unisonic Technologies

LOW VOLTAGE TELEPHONE TRANSMISSION CIRCUIT WITH DIALLER INTERFACE

Unspecified

TELEFUNK ELECTRONIC CREATIVE TECHNOLOGIEN U2200B-FP

Philips Electronics

Listening-in circuit for line-powered telephone sets

Philips Electronics

Versatile telephone transmission circuit with dialler interface

Philips Electronics

Hands free IC

Philips Electronics

Speech and handsfree IC with auxiliary inputs/outputs and analog multiplexer

Philips Electronics

Speech and handsfree IC

Temic Semiconductors

Zero Voltage Switch with Fixed Ramp

Philips Electronics

Low voltage transmission circuits with dialler interface

Philips Electronics

Low voltage versatile telephone transmission circuit with dialler interface

Philips Electronics

Voice switched speakerphone IC

Philips Electronics

Speech and loudspeaker amplifie IC with auxiliary inputs/outputs and analog multiplexer

Telefunken Licences GmbH

Quasi Parallel Sound Processing with Quadrature Intercarrier Demodulator

Unspecified

Tone Ringer IC (14-Pin Plastic Package TO-116)