Phil,
The only problem with a simple Y connection is that the mic will be
'live' when using the DTMF pad.
If you need an attenuator, try a 100k in series with the cable and a 10k
from the line to ground. Those values are high enough not to interfere
with the mic. Adjust the value of the
I need to interface a DTMF pad to the mic input for special-purpose
signaling but I have not yet found a desk mic that has DTMF capability
built-in. Has anyone had any experience doing that? If an external pad
is required (I have one floating around here somewhere), how can it be
done?
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