Obviously you are blind to the obvious. Phonecompany cant solve it,
new phones etc dont solve it. It's clear that you are experiencing
paranormal phenomena. Is the ringing at the same time? If its 2-4 AM
that is the prime time for spirit activity. If you dont act fast your
family is in serious danger. Your denial gives the demon strength.
Phones need enough power to ring properly - "Ringer Equivalence
Number" (REN) should be a the bottom of the phone. Add those numbers
up (total of all phones), generally a home can handle five phones on
the power supplied by the telecom.
Also consider some type of interference, CB radio, HAM, local AM
station, wireless devices, etc.
ET phoning home?
WoW!, this generated a lot of responses.
I'm not a telephone engineer however I am an electronic tech.
Basically a telephone rings because of the presence of a ninety volt AC
signal sent out from the local toll office. You phone rings because of that
voltage being present.
I suggest that Bell South connect a simple recorder to your phone line for a
period of time to see the level of the "ring" voltage and time/frequency.
Its easy for stay voltages to be induced into wires, that's likely what's
happening in your home.
Your home (and phones) are not possesed!
I understand why the BS technician gave you his cell & home numbers. This
has become his quest. I myself have often had puzzling technical problems
that have stumped me. Typically when I do find the solution it's one of
those "Why didn't I think of that?!".
Please let us know what the final solution is.
Help me here, please. I've been "bit" while touching/working with a
phone line in my home. Never did I imagine it being ninety volt AC.
What little I know is that this a constant low-level voltage and for
the phone to ring it needs a higher voltage...but 90 volt AC?
Only by more items using telecom, like DSL, DTV, modems, fax...yawn.
Newer devices need less voltage than older ones.
About 35 years ago, I measured the voltage in Chicago, and it was a
lot lower than 90. I think I measured it in NYC or Baltimore and it
was 90 or near there. I don't know if the difference is time or
distance. But I wouldn't be surprised if the voltage varies by
Ringing voltage is 90VAC at 20Hz and it
is superimposed on about 40 volts
DC. The number of phones and the line
resistance will affect the voltage tha
you actually read in your house.
The DC on your phone line varies.
Typically, it was alway from central
office -48 volts which usually runs
about -52 volts. However, I recently
my line is around 60 volts. It is not
directly connected to a central office, but
instead, to an underground remote about
2 block from me. This was done
in order to allow more people to get
DSL. Also, when the line is active, the
voltage across the line will be lower.
Are you sure it is 90v AC, in my checks to build a phone ring detector many
years ago, and in internet research I have found that the ringer is 70 to
90v pulsed DC not AC. The actual phone runs on 12v DC.
I measured the voltage myself. Mostly many years ago with both
voltmeter and oscilloscope, and recently with a meter, and again just now.
With no phones off-hook (all phones hung up), I just got 43 volts DC. I
have heard other figures for what this is supposed to be, including 40,
42, 48 and 50 volts.
The ring signal is AC with peak-to-peak voltage 80-100 volts (more often
at least 90) superimposed upon the DC. I remember clearly an oscilloscope
(many years ago) showing the AC to be just strong enough for the AC peaks
in the polarity direction opposite that of the DC to outweigh the DC just
enough to have peak voltage in the polarity direction opposite that of the
DC polarity being a few volts. The AC peaks in the same direction as the
DC, combined with the DC, had a peak voltage slightly over twice the DC
voltage. Makes me think 90, maybe 95 volts.
Sadly, I can't remember whether the waveform was sinewave or squarewave
and I can't remember whether the frequency was 20 Hz or 25, althoug
several seconds with Google is making me lean towards 20 Hz sinewave.
With a phone off hook, I just found the DC voltage to be 6 volts. This
will vary with make and model of phone and I was expecting more.
- Don Klipstein ( firstname.lastname@example.org)
If the ringer used DC, those ring-control cords wouldn't work. Such a
cord uses a full-wave rectifier.
The AC ring (75VAC here) is on the same wire as the 50VDC talk
voltage. The combined voltage would vary from -25V to +125V (50+-75).
Removing the AC component allows the phone to work but with no ring.
I like this idea. Regardless of the bickering over what the ring voltage
is *supposed* to be, a test recorder would show whether what is coming down
the line in the middle of the night resembles what you are getting from the
central office switch on a normal ring. If it's the same then an actual
call or something with the switch is the likely culprit. If not then maybe
crossed wires, induced voltage, etc.
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