![Philips](/logo/Philips.png)
Philips Electronics
Low voltage versatile telephone transmission circuit with dialler interface
![Philips](/logo/Philips.png)
Philips Electronics
Voice switched speakerphone IC
![Philips](/logo/Philips.png)
Philips Electronics
Speech and loudspeaker amplifie IC with auxiliary inputs/outputs and analog multiplexer
![Telefunken](/logo/Telefunken.png)
Telefunken Licences GmbH
Quasi Parallel Sound Processing with Quadrature Intercarrier Demodulator
![ETC](/logo/ETC.png)
Unspecified
Tone Ringer IC (14-Pin Plastic Package TO-116)
![Philips](/logo/Philips.png)
Philips Electronics
Versatile telephone transmission circuit with dialler interface
![Philips](/logo/Philips.png)
Philips Electronics
Speech and listening-in IC