On Tue, 23 Feb 2010 16:54:12 -0500, "Michael A. Terrell"
wrote:
Jim Thompson wrote:
On Mon, 22 Feb 2010 17:47:18 -0700, Jim Thompson
wrote:
[snip]
On a similar note: Anyone familiar enough with modern telephone
circuitry to devise (or suggest) the following... re-wire phone so
that ringer is disconnected ONLY for the first ring?
Note that I said "ringer", I want the phone electronics, in particular
the CID sensing, to see the ring voltage, so that CID is displayed
BEFORE an audible "ring".
Knew it was a dumb question just as soon as I posted...
The telephone right here in front of me has a switch to turn off the
ringer :-)
So only a ring detect and relay AT the phone.
At telephone service entry, detect "800", etc, during this interval,
block further ringing voltage.
Connect the ringers to a spare wire, and let your interface turn on
all the ringers by connecting them to the proper side of the phone line.
This house isn't as nice as the old one out north in the desert...
there I had a telephone bundle the size of my thumb running throughout
the house :-)
But I do have a spare pair... I dumped the fax line and switched to an
Internet fax arrangement... 1/6th the cost.
And the V-Tech (portable) phones seem already to have this feature,
they seem to wake-up, read CID, then ring.
...Jim Thompson
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