JK Audio THAT-2 - Manual (Page 2)

2
Features
The name THAT-2 stands for "Telephone Handset Audio
Tap" which is a perfect description of this product. Simply
install THAT-2 between the handset and the base of your
telephone and you will be able to record audio from the
telephone and send audio into the telephone.
To Phone Jacks
There are two input jacks on THAT-2. You can use either
the red RCA phono jack on the front or the female XLR
jack on the back. These are line level inputs for signals
that you want to send down the phone line. These jacks
can be connected to an audio output such as the
headphone output jack on a tape recorder, the line output
of a PC audio card, or the line output from a CD player or
audio mixer.
From Phone Jacks
There are two output jacks on THAT-2. Both the white
RCA phono jack on the front, and the male XLR jack
carry the same signal.
These mic level output jacks provide a mix of both sides
of the conversation. In other words, whatever you send
down the phone line will come back on these jacks mixed
with the audio from the other side of the call. This mix
ratio is not adjustable. It is a function of the telephone,
not our product. As it turns out, this is a suitable mix ratio
for most applications.