Re: OT: telephone black box

Jim Thompson wrote:

On 11 Jan 2009 08:09:17 GMT, Jasen Betts <jasen@xxxxxxxxxx> wrote:


On 2009-01-10, Jim Thompson <To-Email-Use-The-Envelope-Icon@xxxxxxxxxxxxxxx> wrote:

On Fri, 09 Jan 2009 22:18:22 -0800, Robert Baer
<robertbaer@xxxxxxxxxxxx> wrote:


Jim Thompson wrote:


On Thu, 08 Jan 2009 02:48:11 -0800, Robert Baer
<robertbaer@xxxxxxxxxxxx> wrote:

krw wrote:

In article <7mm9m4hlimpmhjptb7ebfff7j88bmimteh@xxxxxxx>, To-Email-
Use-The-Envelope-Icon@xxxxxxxxxxxxxxx says...>

On Wed, 10 Dec 2008 11:55:15 -0700, Jim Thompson
<To-Email-Use-The-Envelope-Icon@xxxxxxxxxxxxxxx> wrote:

With "kill" based on CID I just thought of another feature:

At the 12th ring my phone rolls to voice mail. Set system for
allowing 11 rings for 800 numbers then "answer" (off hook for a few
seconds), prevents 800 crap in the voice mail ;-)

Better yet, answer on the first ring: "This mailbox is full", then
hang-up ;-)

Even faster and lower power... Do what I do and unplug the (only) phone and stick it in the drawer (the line is for DSL).

Any such answer attempt will not work; as marketeers that call (me) hang up on or before the first syllable.

You're forgetting that my scheme would blank the first ring while you
look at the CID, no recognition or black-list, just ignore... doesn't
ring AT ALL.


Hmm...the CID shows *before* any ring.
So the black box has some time (maybe 100mSec) to do its analysis.

Yep. The problem I'm trying to get my hands around is how to get it
to display on _your_ phone. If "ring" voltage initiates your phone's
CID mechanism how do we do that without making "ringing" annoy you?

use a high-pass filter to block the ringing ?


Full wave rectifier works ducky. But we need "something" to cause
your phone to display the CID information.


or you could store and forward the CID data, it's just FSK data
between 1.2 and 2.1Khz, shouldn't be too hard to produce with (even) a 1-bit dac,



I've considered that, but I'm trying, in my usual stubborn way, to
keep this monumentally simple-minded ;-)

...Jim Thompson
KISS is a very good way to have reliability and reduced costs.
.

Relevant Pages

  • Re: OT: telephone black box
    ... At the 12th ring my phone rolls to voice mail. ... CID mechanism how do we do that without making "ringing" annoy you? ...
    (sci.electronics.design)
  • Re: OT: telephone black box
    ... At the 12th ring my phone rolls to voice mail. ... ...Jim Thompson ... CID mechanism how do we do that without making "ringing" annoy you? ...
    (sci.electronics.design)
  • Re: OT: telephone black box
    ... At the 12th ring my phone rolls to voice mail. ... ...Jim Thompson ... CID mechanism how do we do that without making "ringing" annoy you? ...
    (sci.electronics.design)
  • Re: OT: telephone black box
    ... At the 12th ring my phone rolls to voice mail. ... CID mechanism how do we do that without making "ringing" annoy you? ...
    (sci.electronics.design)
  • Re: OT: abusive calls penalty
    ... Jim Thompson wrote: ... How do I insert CID onto a telco line that hasn't been ... The phones get the CID, then ring. ...
    (sci.electronics.design)
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