16 Jan
2018
16 Jan
'18
3:27 p.m.
On 01/16/2018 04:19 PM, Fred Cisin via cctalk wrote:
If you don't need the "handshake" for
dialtone, ring, caller-ID, etc.,
then all you need is some electric power.
Now I'm wondering about superimposing ~90 VAC (at 20 Hz) to simulate ring.
I think that the ""dialing modem could be configured to ignore the
incoming ring while it's dialing. If not, some analog circuitry might
need to be applied.
I wonder if a momentary break between the two sides (still applying 9V
to each) while applying ringing voltage to the receiving side would work.
Now I need to figure out how to stop my brain.
For MAXIMUM realism, then the "answer" end
should also get occasional
random "wrong number", incoming fax, "I'm calling to offer you a great
deal on" (I don't listen past that).
LOL
--
Grant. . . .
unix || die
--
Grant. . . .
unix || die