TAD

The Telephone Answering Device connector is used for passing audio bidirectionally between a voice modem and a sound card. This allows voice calls to be made using a computer, with the audio coming out of the speakers connected to the sound card, and the sound card's microphone being used to pick up speech for the call.

Pinout

Pin	Purpose
1	Phone line. On a sound card, input from the modem. On a modem, audio output. Normally white, to match the left channel on a CD audio cable.
2	GND
3	GND
4	Microphone. On a sound card, output from the microphone. On a modem, audio input to send over the phone line. Normally red, to match the right channel on a CD audio cable.

Devices

Sound cards

The following sound cards have a TAD connector:

Device	Model	Bus type	Bus width	TAD	MB_PRO?
Creative Sound Blaster 16 (C16F)	CT2940	ISA	16-bit	Dupont-4	✓
Sound Blaster 16 (C16F) IDE	CT2940	ISA	16-bit	Dupont-4	✓
Creative Sound Blaster 16 Prelude	CT2960	ISA	16-bit	Dupont-4	✓

Modems

The following modems have a TAD connector:

See also

• CD audio connectors lists the various types of connectors used for TAD
• The MB_PRO connector provides equivalent functionality to TAD